Refactor string utility function into extension function

[vitusortner]

No description provided.

[codecov]

Codecov Report

Merging #241 into develop will increase coverage by 0.11%.
The diff coverage is 98.33%.

@@             Coverage Diff             @@
##           develop     #241      +/-   ##
===========================================
+ Coverage    80.49%   80.61%   +0.11%     
===========================================
  Files           50       50              
  Lines         1369     1372       +3     
===========================================
+ Hits          1102     1106       +4     
+ Misses         267      266       -1

Flag	Coverage Δ
#floor	80.61% <98.33%> (+0.11%)	⬆️
#floor_generator	80.1% <98.33%> (+0.13%)	⬆️

Impacted Files	Coverage Δ
floor_generator/lib/misc/type_utils.dart	100% <100%> (ø)	⬆️
...loor_generator/lib/processor/entity_processor.dart	77.27% <100%> (-0.34%)	⬇️
...ator/lib/processor/insertion_method_processor.dart	88.57% <100%> (ø)	⬆️
...enerator/lib/processor/query_method_processor.dart	100% <100%> (ø)	⬆️
floor_generator/lib/processor/field_processor.dart	82.14% <100%> (ø)	⬆️
...nerator/lib/processor/update_method_processor.dart	82.35% <100%> (ø)	⬆️
floor_generator/lib/processor/dao_processor.dart	100% <100%> (ø)	⬆️
...or_generator/lib/processor/database_processor.dart	75% <85.71%> (+1.66%)	⬆️

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