Implemented --show-properties in board details command

[cmaglie]

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• Tests for the changes have been added (for bug fixes / features)
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What kind of change does this PR introduce?

Adds a --show-properties flag to board details to allow getting the build properties of a board without actually compiling a sketch. The build properties will be missing some sketch-related definitions

What is the current behavior?

What is the new behavior?

$ arduino-cli board details -b arduino:avr:leonardo --show-properties=expanded | grep build.usb
build.usb_manufacturer="Unknown"
build.usb_flags=-DUSB_VID=0x2341 -DUSB_PID=0x8036 '-DUSB_MANUFACTURER="Unknown"' '-DUSB_PRODUCT="Arduino Leonardo"'
build.usb_product="Arduino Leonardo"
$

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

Other information

This PR also completes the refactoring of the legacy build-properties generation.
Fix #1047

[codecov]

Codecov Report

Patch coverage: 63.18% and project coverage change: -0.18 ⚠️

Comparison is base (bfb5f3f) 62.66% compared to head (5954a05) 62.48%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2151      +/-   ##
==========================================
- Coverage   62.66%   62.48%   -0.18%     
==========================================
  Files         227      224       -3     
  Lines       19545    19516      -29     
==========================================
- Hits        12247    12195      -52     
- Misses       6205     6226      +21     
- Partials     1093     1095       +2     

Flag	Coverage Δ
unit	62.48% <63.18%> (-0.18%)	⬇️

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

Impacted Files	Coverage Δ
commands/board/details.go	0.00% <0.00%> (ø)
internal/cli/board/details.go	12.05% <16.12%> (-1.28%)	⬇️
internal/cli/board/list.go	8.86% <27.27%> (-0.76%)	⬇️
commands/compile/compile.go	66.99% <67.41%> (-4.82%)	⬇️
arduino/builder/sketch.go	57.62% <80.00%> (+4.56%)	⬆️
internal/cli/arguments/show_properties.go	87.50% <87.50%> (ø)
internal/cli/compile/compile.go	66.87% <94.11%> (-0.49%)	⬇️
arduino/cores/packagemanager/package_manager.go	77.05% <100.00%> (+1.76%)	⬆️
internal/cli/board/attach.go	22.72% <100.00%> (+1.18%)	⬆️
legacy/builder/container_setup.go	83.33% <100.00%> (-8.78%)	⬇️
... and 2 more

... and 2 files with indirect coverage changes

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