Ignore auto-generated eclipse buildship files

[breautek]

Platforms affected

None

Motivation and Context

Eclipse buildship .project files are being added to several directories automatically from my code editor (VS Code) when working on cordova-android tasks. I think it makes sense for these files to be git ignored.

Description

Added **/.project line in .gitignore

Testing

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary