Issue 75 drupal module dependencies

[codechefmarc]

What:

Adds module dependencies to info.yml file and removes references to those modules in composer.json file to reduce confusion. Addresses #75

Why:

Prevents installation of the created Emulsify-based theme until the correct modules (components and emulsify_twig) are installed. This helps eliminate confusion if the theme doesn't work properly without these modules installed.

How:

Added the two required modules to the dependencies section of the emulsify.info.yml file and removed the two modules from the composer.json file.

To Test:

• [ ] Follow the instructions here to install the Emulsify theme, EXCEPT in step 1 replace the command with the following: emulsify init --starter https://github.com/emulsify-ds/emulsify-drupal.git --checkout issue-75-drupal-module-dependencies "My Awesome Theme" to test the version on that branch.
• [x] Before installing components and emulsify_twig modules, check Drupal appearance page to make sure the theme cannot be installed without those two modules being installed first.
• [x] Add the two modules to the system via composer composer require drupal/components drupal/emulsify_twig
• [x] Clear Drupal cache and reload the Drupal appearance page to make sure the new theme can be installed.

[codechefmarc]

Note that this replaces PR-168

[amazingrando]

@marcb4k The functional testing was good, except that this command did not install this branch but I worked around it, emulsify init --starter https://github.com/emulsify-ds/emulsify-drupal.git --checkout issue-75-drupal-module-dependencies "My Awesome Theme"

[github-actions[bot]]

:tada: This PR is included in version 4.3.1 :tada:

The release is available on GitHub release

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