[Client Introspection] Client Commands Extended Filtering

[sarthakaggarwal97]

In this PR, we introduce a support for few more filters for CLIENT LIST and CLIENT KILL commands. We introduce these new filters:

1. PATTERN pattern the client must subscribe to
2. CHANNEL channel the client must subscribe to
3. SHARD-CHANNEL <shard channel the client must subscribe to>
4. FLAGS Client must include this flag. This can be a string with bunch of flags present one after the other.
5. NAME client name
6. MIN-IDLE minimum idle time of the client

Built on top of: #1401
Partly Addresses: #668

[codecov]

Codecov Report

Attention: Patch coverage is 86.32479% with 64 lines in your changes missing coverage. Please review.

Project coverage is 70.73%. Comparing base (b56f4f7) to head (b5cb71d).
Report is 1 commits behind head on unstable.

Files with missing lines	Patch %	Lines
src/networking.c	86.32%	64 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           unstable    #1466      +/-   ##
============================================
- Coverage     70.86%   70.73%   -0.14%     
============================================
  Files           119      119              
  Lines         64693    64860     +167     
============================================
+ Hits          45847    45876      +29     
- Misses        18846    18984     +138     

Files with missing lines	Coverage Δ
src/commands.def	100.00% <ø> (ø)
src/networking.c	87.79% <86.32%> (-0.85%)	⬇️

... and 11 files with indirect coverage changes