Linting workflow added

[Kevsy]

Commonalities release 0.3.0 defines the linting integration guidelines for automated testing via Github actions. This PR adds the files and configuration to achieve this.

[github-actions]

🦙 MegaLinter status: ❌ ERROR

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	2		0	0.03s
✅ JSON	eslint-plugin-jsonc	1	0	0	1.41s
✅ JSON	jsonlint	1		0	0.18s
✅ JSON	prettier	1	1	0	0.94s
✅ JSON	v8r	1		0	1.46s
❌ OPENAPI	spectral	9		7	17.15s
✅ REPOSITORY	git_diff	yes		no	0.77s
✅ REPOSITORY	secretlint	yes		no	4.61s
❌ YAML	yamllint	9		1	4.86s

See detailed report in MegaLinter reports

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[Kevsy]

^ note the error above is the result of the linter running against the commit, i..e the linter files themselves.

[nicolacdnll]

I would like we get this PR merged sooner rather than later. Could we merge it?

What I see from the errors of the mega linter, most the issues are fixed by #222

Here a resume of the errors:

• 83 issues with line-length
• 37 issues with trailing-spaces
• Some other issues:

  Error: 8:16 [colons] too many spaces after colon
  Error: 105:1 [empty-lines] too many blank lines (3 > 2)
  Warning: 375:9 [comments-indentation] comment not indented like content
  Error: 549:5 [indentation] wrong indentation: expected 6 but found 4
  Warning: 639:2 [comments-indentation] comment not indented like content
  Warning: 672:2 [comments-indentation] comment not indented like content
  Error: 743:10 [indentation] wrong indentation: expected 10 but found 9
  Error: 759:15 [indentation] wrong indentation: expected 10 but found 14
  Warning: 858:2 [comments-indentation] comment not indented like content
  Warning: 889:2 [comments-indentation] comment not indented like content
  Warning: 978:2 [comments-indentation] comment not indented like content
  Warning: 1540:2 [comments-indentation] comment not indented like content

[Kevsy]

@nicolacdnll thanks and agree - you should be able to merge the PR (I can't merge because I created the PR)