[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. SUBSCRIBED-PATTERN pattern the client must subscribe to
2. SUBSCRIBED-CHANNEL channel the client must subscribe to
3. SUBSCRIBED-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

Partly Addresses: #668

[codecov]

Codecov Report

Attention: Patch coverage is 60.20408% with 39 lines in your changes missing coverage. Please review.

Project coverage is 70.91%. Comparing base (6a8f068) to head (91df97a).

Files with missing lines	Patch %	Lines
src/networking.c	60.20%	39 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           unstable    #1466      +/-   ##
============================================
+ Coverage     70.81%   70.91%   +0.10%     
============================================
  Files           120      120              
  Lines         65094    65189      +95     
============================================
+ Hits          46095    46230     +135     
+ Misses        18999    18959      -40     

Files with missing lines	Coverage Δ
src/commands.def	100.00% <ø> (ø)
src/networking.c	87.64% <60.20%> (-1.11%)	⬇️

... and 20 files with indirect coverage changes