add castString in functions

[AEsir777]

• fix signed int type downcast (to do: unsigned int type downcast + wrapper function (leave to next PR))
• changed string cast to function std::from_chars
• changed all occurrences of stringCastUtils to use the kuzu functions

To Do:

• fix all the typos
• add test cases

[codecov]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (d4b0f19) 89.83% compared to head (7b1af69) 89.81%.
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2092      +/-   ##
==========================================
- Coverage   89.83%   89.81%   -0.03%     
==========================================
  Files         985      986       +1     
  Lines       35461    35626     +165     
==========================================
+ Hits        31858    31998     +140     
- Misses       3603     3628      +25     

Files	Coverage Δ
src/common/string_utils.cpp	97.61% <100.00%> (+0.47%)	⬆️
src/function/vector_cast_functions.cpp	85.05% <100.00%> (+0.91%)	⬆️
src/include/common/string_utils.h	91.66% <ø> (ø)
src/include/common/type_utils.h	100.00% <ø> (+2.56%)	⬆️
src/include/function/cast/cast_functions.h	100.00% <100.00%> (+0.68%)	⬆️
...age/in_mem_storage_structure/in_mem_column_chunk.h	72.72% <ø> (ø)
src/parser/transform/transform_expression.cpp	97.37% <100.00%> (+<0.01%)	⬆️
...operator/persistent/reader/csv/base_csv_reader.cpp	96.05% <100.00%> (-0.13%)	⬇️
.../storage/in_mem_storage_structure/in_mem_lists.cpp	68.09% <ø> (ø)
src/storage/store/table_copy_utils.cpp	96.87% <ø> (ø)
... and 2 more

... and 9 files with indirect coverage changes

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[Riolku]

Looks good!