- Fix AnonymousMigrations parsing for } beyond the class declaration

[flap152]

In the AnonymousMigrations task the closing ; will appear in the wrong location if } appears after the class (in a comment section for example), as reported in issue #10 .

In this PR, we parse the class to determine where the declaration ends, then insert a ;
This is similar to what happens in the DownMigration task.

[flap152]

The migration fixture is created specifically to address the issue, but the comment section is the only significant difference and could simply be added to the "simple.php" migration if wanted

[jasonmccreary]

Sorry for the delay, if you can fix the lint issue, I'll get this merged and tagged.

[flap152]

Locally, phplint itself was ok but pint fixed a couple whitespaces. I enabled GH actions on my fork and pushed to main to trigger them and got all green. Should be ok now.