Implement keys command

[danielealbano]

This PR implements the KEYS command, a new op for the storage db to fetch all the keys matching a glob pattern, a glob pattern matchinf function and all the required tests for the KEYS command.

[codecov]

Codecov Report

Base: 80.87% // Head: 80.50% // Decreases project coverage by -0.37% ⚠️

Coverage data is based on head (4cc3329) compared to base (5a5283d).
Patch coverage: 63.87% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #203      +/-   ##
==========================================
- Coverage   80.87%   80.50%   -0.37%     
==========================================
  Files         131      132       +1     
  Lines        7801     7991     +190     
==========================================
+ Hits         6309     6433     +124     
- Misses       1492     1558      +66     

Impacted Files	Coverage Δ
src/utils_string_sw.c	100.00% <ø> (ø)
src/utils_string.c	55.80% <53.91%> (-24.20%)	⬇️
src/module/redis/module_redis_connection.c	73.10% <76.47%> (+0.17%)	⬆️
src/storage/db/storage_db.c	64.94% <86.67%> (+1.23%)	⬆️
...c/module/redis/command/module_redis_command_keys.c	87.50% <87.50%> (ø)
src/module/redis/module_redis_command.c	82.97% <0.00%> (+0.82%)	⬆️

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