Add special sorting for special characters in globs

[ashleywillard]

Situation

/frontend/packages/my-thing/src/pages/blah is owned by Foo via a .codeowner file

/frontend/packages/my-thing/src/pages/blah/(bar) is owned by Bar via a .codeowner file

Expected Behavior

The most specific (nested) .codeowner file should take precedence, so /frontend/packages/my-thing/src/pages/blah/(bar)/Sidebar.test.tsx should be owned by Bar.

Actual Behavior

/frontend/packages/my-thing/src/pages/blah/(bar)/Sidebar.test.tsx shows that it is owned by Foo. This is because /frontend/packages/my-thing/src/pages/blah/(bar) is written above /frontend/packages/my-thing/src/pages/blah in the CODEOWNERS file.

This change

This change updates the file sorting such that if two globs match up until a **, then the one without the ** at that location will be prioritized. This ensures that the more specific folder will come last, which means that the file will show the proper owner.

• TODO: test this on a large repo before merging

Performance seems comparable