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>