Added debug check command to check if a combination of board/programmer supports debugging.

[cmaglie]

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• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• UPGRADING.md has been updated with a migration guide (for breaking changes)
• configuration.schema.json updated if new parameters are added.

What kind of change does this PR introduce?

Adds the debug check command (and its gRPC counterpart) to verify if a combination of board/programmer supports debugging. The command also returns the debug_fqbn which is the FQBN without the board options that do not affect the debugger configuration.

What is the current behavior?

What is the new behavior?

$ arduino-cli debug check -b arduino:samd:mkr1000
Missing programmer
$ arduino-cli debug check -b arduino:samd:mkr1000 -P atmel_ice
The given board/programmer configuration supports debugging.
$ arduino-cli debug check -b arduino:samd:mkr1000 -P atmel_ice --format json
{
  "debugging_supported": true,
  "debug_fqbn": "arduino:samd:mkr1000"
}
$ arduino-cli debug check -b arduino:avr:uno -P atmel_ice
The given board/programmer configuration does NOT support debugging.
$ arduino-cli debug check -b arduino:avr:uno -P atmel_ice --format json
{
  "debugging_supported": false
}

Does this PR introduce a breaking change, and is titled accordingly?

Other information

[codecov]

Codecov Report

Attention: 25 lines in your changes are missing coverage. Please review.

Comparison is base (ab03161) 67.38% compared to head (d27c408) 67.54%.

Files	Patch %	Lines
commands/debug/debug_info.go	76.05%	11 Missing and 6 partials ⚠️
commands/daemon/debug.go	0.00%	3 Missing ⚠️
internal/cli/debug/debug_check.go	93.47%	2 Missing and 1 partial ⚠️
arduino/cores/fqbn.go	60.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2443      +/-   ##
==========================================
+ Coverage   67.38%   67.54%   +0.15%     
==========================================
  Files         210      211       +1     
  Lines       20591    20712     +121     
==========================================
+ Hits        13876    13990     +114     
- Misses       5578     5583       +5     
- Partials     1137     1139       +2     

Flag	Coverage Δ
unit	67.54% <82.87%> (+0.15%)	⬆️

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