Issue #3082958: Add gitignore(s) to composer-ready project templates

added 799 commits

• bca55d1f...fefb05b7 - 797 commits from branch project:9.4.x
• 3877ee83 - Adds LegacyProject .gitignore template file.
• 35c4c07f - Adds RecommendedProject .gitignore template file.

Compare with previous version

changed the description

changed target branch from 9.4.x to 11.x

closed