Have drupal-scaffold locations web-root for Vardoc as docroot to fix composer web-root folder in projects

Problem/Motivation

Composer is fixed to docroot folder and should use web-root such as core composer to let use this project into custom folder.

Steps to reproduce

Having issues with custom composer build with Vardoc profile conflicting with changes over Vardoc Project template
When changed in projects, composer will face issues on builds and updates

Proposed resolution

1. Double-check what Drupal Recommended Project
https://github.com/drupal/recommended-project/blob/9.4.5/composer.json#L43
2. Check Acquia Drupal Recommended Project
https://github.com/acquia/drupal-recommended-project/blob/1.11.19/compos...

3. Use the right web-root in both Vardoc profile and Vardoc Project template

    "drupal-scaffold": {
      "allowed-packages": [
        "drupal/core",
        "vardot/varbase",
        "vardot/vardoc"
      ],
      "gitignore": true,
      "locations": {
        "web-root": "./docroot"
      },
      "file-mapping": {
        "[web-root]/sites/default/default.services.yml": {
          "mode": "replace",
          "overwrite": false,
          "path": "docroot/core/assets/scaffold/files/default.services.yml"
        },
        "[web-root]/sites/default/default.settings.php": {
          "mode": "replace",
          "overwrite": false,
          "path": "docroot/core/assets/scaffold/files/default.settings.php"
        },
        "[web-root]/robots.txt": {
          "append": "docroot/profiles/varbase/src/assets/varbase-robots-additions.txt"
        }
      }
    },

Projects could change "web-root": "docroot/" and docroot to web using change or a clone of the Vardoc Project Template
Have drupal-scaffold locations web-root for Vardoc Project template as docroot to fix composer web-root folder in projects #41

Remaining tasks

• ✅ File an issue about this project
• ✅ Addition/Change/Update/Fix to this project
• ✅ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support on feature change/addition
• ➖ User Guide Documentation support on feature change/addition
• ➖ Accessibility and Readability
• ✅ Code review from 1 Vardoc core team member
• ✅ Full testing and approval
• ✅ Credit contributors
• ✅ Review with the product owner
• ✅ Update Release Notes and Update Helper on new feature change/addition
• ✅ Release vardoc-4.0.6, Vardoc 5.0.0-alpha6

Vardoc update type

• ✅ No Update
• ➖ Optional Update
• ➖ Forced Update
• ➖ Forced Update if Unchanged

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• Issue #3301450 by vacho: Have drupal-scaffold locations web-root as docroot to fix composer web-root folder in projects