HPCC-10451 UnicodeWithinEditN and UnicodeGetRangeOfWords

- Add declarations for UnicodeWithinEditN and UnicodeGetRangeOfWords
- Remove declarations for deprecated functions UnicodeLocaleMatchBagofwords
and StringMatchBagofwords


Signed-off-by: Edin Muharemagic <edin.muharemagic@lexisnexis.com>
Merge pull request #5693 from emuharemagic/hppc10451

HPCC-10451 UnicodeWithinEditN and UnicodeGetRangeOfWords

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>