Allow type_insensitive parameter for does_not_equal_string_part and equals_string_part operators

[marisawyckmans]

Feature Description

Comparing Char and Num variables (eg --ORNRLO versus --STNRLO) using the "does_not_equal_string_part" and "equals_string_part" operators currently does not work. Also "type_insensitive: true" which can be used in combination with "equal_to" operator doesn't work with the "does_not_equal_string_part" and "equals_string_part" operators.

For our custom rules, we want to compare Char and Num variables using the "does_not_equal_string_part" and "equals_string_part" operators (for example: extract numeric part of --ORNRLO (char) and compare to --STNRLO (num)). Would it be possible to allow type_insensitive in combination with these operators? Thanks for looking into this!