Limit the indexing on a set of content types and search using content view filter

Problem/Motivation

The patch adds the possibility of searching for file contents using a content view, in particular using a filter that pre-existed in a view (for example the title filter); also, limit the indexing on a set of content types, for example, the content types used in the view.

I also explain this in a blog post with the title: How to search in files content using Apache Tika and Drupal Content Views.

Search it on Google if you want to read it.

Steps to reproduce

N/A

Proposed resolution

Patch attached to this thread.

Remaining tasks

Review the patch and improve it.

User interface changes

Added three form input to the administration page of the module.

API changes

N/A

Data model changes

N/A