Feature add the possibility to send pcic commands

[graugans]

This will allow the user to send commands like C?, p0 or even to change the output with the c command

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 4.88889% with 214 lines in your changes missing coverage. Please review.

Project coverage is 22.95%. Comparing base (b5ee90a) to head (a17a4f5).
Report is 3 commits behind head on v2.

Files	Patch %	Lines
pkg/pcic/protocol.go	11.00%	85 Missing and 4 partials ⚠️
pkg/swupdater/swupdater.go	0.00%	50 Missing ⚠️
cmd/ovp8xx/cmd/pcic.go	0.00%	44 Missing ⚠️
cmd/ovp8xx/cmd/swupdate.go	0.00%	31 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##               v2      #17      +/-   ##
==========================================
- Coverage   26.45%   22.95%   -3.51%     
==========================================
  Files          22       22              
  Lines        1096     1298     +202     
==========================================
+ Hits          290      298       +8     
- Misses        805      995     +190     
- Partials        1        5       +4     

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