feat: connect to xmidt cluster

[denopink]

WIP

Pending TODOs

• add ws provider & config (referred as type Client struct)
• add openfail xmidt connection
• add xmidt connection with jwt

[codecov]

Codecov Report

Attention: Patch coverage is 27.82609% with 166 lines in your changes are missing coverage. Please review.

Project coverage is 70.09%. Comparing base (1c24cba) to head (4ea0f1e).
Report is 1 commits behind head on main.

Files	Patch %	Lines
cmd/xmidt-agent/ws.go	0.00%	58 Missing ⚠️
cmd/xmidt-agent/main.go	34.28%	46 Missing ⚠️
internal/websocket/options.go	16.66%	24 Missing and 6 partials ⚠️
internal/websocket/internal_options.go	57.14%	8 Missing and 4 partials ⚠️
cmd/xmidt-agent/instructions.go	0.00%	11 Missing ⚠️
internal/websocket/ws.go	69.23%	7 Missing and 1 partial ⚠️
cmd/xmidt-agent/credentials.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #45       +/-   ##
===========================================
- Coverage   80.97%   70.09%   -10.89%     
===========================================
  Files          30       31        +1     
  Lines        2113     2247      +134     
===========================================
- Hits         1711     1575      -136     
- Misses        375      639      +264     
- Partials       27       33        +6     

Flag	Coverage Δ
unittests	70.09% <27.82%> (-10.89%)	⬇️

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