Allow port, protocol and port settings to be specified in profiles.

[cmaglie]

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

• Allow specifying the default port and protocol on a per-profile basis.
• Allows specifying default port settings (like baudrate, etc...) on a per-sketch and per-profile basis.

What is the current behavior?

Default port and protocol can not be specified per-profile.
Port settings can not be specified either per-sketch or per-profile.

What is the new behavior?

The above features are now allowed inside sketch.yaml:

profiles:
  uno:
    fqbn: arduino:avr:uno
    platforms:
      - platform: arduino:avr (1.8.6)
    libraries:
      - RTClib (2.1.4)
      - Adafruit BusIO (1.16.1)
    port: /dev/ttyACM2
    port_config:
      baudrate: 9600
      bits: 9

default_fqbn: arduino:samd:arduino_zero_native
default_port: /dev/ttyACM0
default_port_config:
  baudrate: 115200
  bits: 9

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

Other information

Fix #2640
FIx #2554

[codecov]

Codecov Report

Attention: Patch coverage is 73.94958% with 31 lines in your changes missing coverage. Please review.

Project coverage is 67.68%. Comparing base (863c1ec) to head (e13d66e).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/arduino/sketch/profiles.go	44.82%	12 Missing and 4 partials ⚠️
internal/cli/monitor/monitor.go	81.66%	11 Missing ⚠️
internal/cli/arguments/port.go	66.66%	2 Missing and 1 partial ⚠️
internal/cli/burnbootloader/burnbootloader.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2717   +/-   ##
=======================================
  Coverage   67.68%   67.68%           
=======================================
  Files         234      234           
  Lines       22226    22285   +59     
=======================================
+ Hits        15043    15083   +40     
- Misses       6001     6017   +16     
- Partials     1182     1185    +3     

Flag	Coverage Δ
unit	67.68% <73.94%> (+<0.01%)	⬆️

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[alessio-perugini]

LGTM.

It would be awesome to add a test similar to monitor_test.go
That tests for the new profile configs.

Do you think it can be done without too much pain?

[cmaglie]

Do you think it can be done without too much pain?

Thanks to the new tests, I discovered a lot of weird subcases and some old tests that were wrong. 👍

[alessio-perugini]

Awesome work with the tests. I've done a quick test on my Linux machine too and it works as expected.

🚀