Implement collation functions for OSX platforms.

• GlobalizationNative_GetSortHandle

    - return reference to NSLocale
  

• GlobalizationNative_CloseSortHandle

    - release reference to NSLocale
  

• GlobalizationNative_CompareString

    - [NSString compare:options:range:locale:](https://developer.apple.com/documentation/foundation/nsstring/1414561-compare?language=objc)
  

• GlobalizationNative_IndexOf

    - [NSString rangeOfString:options:range:locale:](https://developer.apple.com/documentation/foundation/nsstring/1417348-rangeofstring?language=objc)
  

• GlobalizationNative_LastIndexOf

    - same as GlobalizationNative_IndexOf w/ NSBackwardsSearch
  

• GlobalizationNative_StartsWith

    - can be implemented trough GlobalizationNative_CompareString?
  

• GlobalizationNative_EndsWith

    - can be implemented trough GlobalizationNative_CompareString?
  

• GlobalizationNative_GetSortKey

    - wcsxfrm_l?
  

• GlobalizationNative_GetSortVersion

    - ??
  

Contributes to #80689