Deprecations removal: data_search module.

Problem/Motivation

As a part of D9 readiness update, deprecated method calls should be removed and replaced with suggested calls.
This issue is for all issues in data_search module.

Below is drupal-check report:

~/.config/composer/vendor/bin/drupal-check -d -- data_search/
 3/3 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%

 ------ ------------------------------------------------------------------------- 
  Line   data_search.admin.inc                                                    
 ------ ------------------------------------------------------------------------- 
  15     Call to deprecated function drupal_set_message():                        
         in Drupal 8.5.0 and will be removed before Drupal 9.0.0.                 
         Use \Drupal\Core\Messenger\MessengerInterface::addMessage() instead.     
  70     Call to deprecated function drupal_render():                             
         as of Drupal 8.0.x, will be removed before Drupal 9.0.0. Use the         
  77     Call to deprecated function drupal_render_children():                    
         in Drupal 8.0.x and will be removed before 9.0.0. Avoid early            
         rendering when possible or loop through the elements and render them as  
         they are available.                                                      
 ------ ------------------------------------------------------------------------- 

 ------ ------------------------------------------------------------------------- 
  Line   data_search.install                                                      
 ------ ------------------------------------------------------------------------- 
  17     Call to deprecated function db_query():                                  
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call query() on it. For example,                                         
  18     Call to deprecated function db_query():                                  
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call query() on it. For example,                                         
  19     Call to deprecated function db_query():                                  
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call query() on it. For example,                                         
 ------ ------------------------------------------------------------------------- 

 ------ ------------------------------------------------------------------------- 
  Line   data_search.module                                                       
 ------ ------------------------------------------------------------------------- 
  88     Call to deprecated function db_query_range():                            
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call queryRange() on it. For example,                                    
  92     Call to deprecated function db_query():                                  
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call query() on it. For example,                                         
  101    Call to deprecated function db_query():                                  
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call query() on it. For example,                                         
  117    Call to deprecated function db_update():                                 
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call update() on it. For example,                                        
  135    Call to deprecated function db_query():                                  
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call query() on it. For example,                                         
  137    Call to deprecated function db_query():                                  
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call query() on it. For example,                                         
  156    Call to deprecated function db_escape_table():                           
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call escapeTable() on it. For example,                                   
  160    Call to deprecated function db_query():                                  
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call query() on it. For example,                                         
  162    Call to deprecated function db_query():                                  
         as of Drupal 8.0.x, will be removed in Drupal 9.0.0. Instead, get        
         a database connection injected into your service from the container and  
         call query() on it. For example,                                         
 ------ ------------------------------------------------------------------------- 

                                                                                                                        
 [ERROR] Found 15 errors                                                                                                
                            

Proposed resolution

Replace deprecated function calls with suggested replacements.

Remaining tasks

Just do it.

User interface changes

None.

API changes

None.

Data model changes

None.