Sort modifiers according to Kotlin conventions

[user1223644]

Sorts declaration modifiers according to the order defined by the Kotlin coding conventions.

For example:

final @Magic public class Foo

suspend override protected fun foo() {}

is formatted as:

@Magic public final class Foo

protected override suspend fun foo() {}

Annotations and comments keep their relative association. Unsupported modifiers such as noinline, crossinline, in, out, and reified act as ordering barriers.

The cleanup applies to both full and partial formatting.

Tests:

./gradlew ktfmtFormat check --no-daemon

Fixes #293

[cgrushko]

Thanks for the pull request!

For transparency, we'd appreciate if you can note whether / how much you've used the help of AI coding tools for creating this PR. Thanks!

[user1223644]

I used codex extensively to help implement this change. I personally reviewed and tested all changes before submitting