Add option for bootstrapping new site with Drupal CMS

[balsama]

Motivation
Adds Drupal CMS to the list of scaffold projects.

Proposed changes
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Alternatives considered
None

Testing steps
acli app:new:local should show three options including Drupal CMS.

[danepowell]

Just add me as a reviewer when this is ready for review

[github-actions]

Try the dev build for this PR: https://acquia-cli.s3.amazonaws.com/build/pr/1840/acli.phar

curl -OL https://acquia-cli.s3.amazonaws.com/build/pr/1840/acli.phar
chmod +x acli.phar

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.92%. Comparing base (428a6e2) to head (09cff1d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1840   +/-   ##
=========================================
  Coverage     92.91%   92.92%           
  Complexity     1846     1846           
=========================================
  Files           123      123           
  Lines          6963     6964    +1     
=========================================
+ Hits           6470     6471    +1     
  Misses          493      493           

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[balsama]

Need to check if this will work without a tagged release of the project. Converted back to draft for now.

[balsama]

Ok, yeah I need to tag a release of the scaffold project so that the resulting command (composer create-project acquia/drupal-cms-project) works without the stability=dev flag.

But I don't want to create that tag until I sort out why the MySQL 57 module isn't working in IDEs.

[balsama]

Ok, all set!