Test regexp_matched_num PR

[RblSb]

Want to see green https://github.com/HaxeFoundation/neko/pull/223

[RblSb]

Okay, so that nmatchs groups count doesnt exist in pcredata typedef structure, so it should be ported from hxcpp implementation.

...Can we skip neko part for regex.matchedNum() in https://github.com/HaxeFoundation/haxe/pull/10290, guys?

[tobil4sk]

The code changed slightly when porting to pcre2. I can try to fix it because it wasn't too long ago when I ported it.

[RblSb]

@Simn can this be merged? This closes #223 and unblocks https://github.com/HaxeFoundation/haxe/pull/10290, so maybe one less neko release will be required in future