feat: added more debug options

[cmaglie]

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• The PR has no duplicates (please search among the Pull Requests
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• The PR follows
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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?

There are 3 changes in the way debug configuration is build:

1. debug.server.openocd.scripts is now an array, so multiple scripts may be provided

   debug.server.openocd.scripts.0=first_script
   debug.server.openocd.scripts.1=second_script
   debug.server.openocd.scripts.2=third_script
   

   debug.server.openocd.script (singular) is still supported but deprecated.
2. The new parameter svd_file has been added

   debug.svd_file=svd-file
   

3. Added the possibility to inject custom parameters for the cortex-debug plugin of the Arduino IDE 2.0, via the subtree debug.cortex-debug.custom.* configuration keys

   debug.cortex-debug.custom.postAttachCommands.0=set remote hardware-watchpoint-limit 2
   debug.cortex-debug.custom.postAttachCommands.1=monitor reset halt
   debug.cortex-debug.custom.postAttachCommands.2=monitor gdb_sync
   debug.cortex-debug.custom.postAttachCommands.3=thb setup
   debug.cortex-debug.custom.postAttachCommands.4=c
   debug.cortex-debug.custom.overrideRestartCommands.0=monitor reset halt
   debug.cortex-debug.custom.overrideRestartCommands.1=monitor gdb_sync
   debug.cortex-debug.custom.overrideRestartCommands.2=thb setup
   debug.cortex-debug.custom.overrideRestartCommands.3=c
   debug.cortex-debug.custom.anotherStringParamer=hellooo
   

   the above is intended to be directly injected in the launch.json generated by the Arduino IDE. The array-style keys (ending with a numeric index something.0=... are automatically converted into JSON arrays. For example the configuration above will produce the following:

   "cortex-debug_custom_configuration": {
     "anotherStringParamer": "hellooo",
     "overrideRestartCommands": [
       "monitor reset halt",
       "monitor gdb_sync",
       "thb setup",
       "c"
     ],
     "postAttachCommands": [
       "set remote hardware-watchpoint-limit 2",
       "monitor reset halt",
       "monitor gdb_sync",
       "thb setup",
       "c"
     ]
   }

What is the current behavior?

The added parameters are ignored.

What is the new behavior?

The added parameters are supported.

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

Only in the gRPC API.

Other information

[codecov]

Codecov Report

Attention: 23 lines in your changes are missing coverage. Please review.

Comparison is base (f561da0) 62.79% compared to head (f088a76) 62.98%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2356      +/-   ##
==========================================
+ Coverage   62.79%   62.98%   +0.18%     
==========================================
  Files         203      203              
  Lines       19143    19243     +100     
==========================================
+ Hits        12021    12120      +99     
+ Misses       6068     6066       -2     
- Partials     1054     1057       +3     

Flag	Coverage Δ
unit	62.98% <81.60%> (+0.18%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
commands/debug/debug.go	40.49% <50.00%> (-0.53%)	⬇️
commands/debug/debug_info.go	66.86% <89.47%> (+12.81%)	⬆️
internal/cli/debug/debug.go	73.48% <77.41%> (+5.35%)	⬆️

... and 1 file with indirect coverage changes

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