ci: Add a separate workflow to run the linter

[shahzadlone]

Relevant issue(s)

Resolves #1435

Description

Add a Lint only workflow.

How has this been tested?

CI on branch of a fork and this PR

[codecov]

Codecov Report

Merging #1434 (9cf98b0) into develop (0e3801e) will decrease coverage by 0.05%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #1434      +/-   ##
===========================================
- Coverage    72.21%   72.17%   -0.05%     
===========================================
  Files          185      185              
  Lines        18160    18160              
===========================================
- Hits         13115    13107       -8     
- Misses        4012     4018       +6     
- Partials      1033     1035       +2     

see 4 files with indirect coverage changes

[AndrewSisley]

question: Why does this not remove the lint stuff from the lint-then-benchmark workflow?

[shahzadlone]

question: Why does this not remove the lint stuff from the lint-then-benchmark workflow?

That entire workflow file will be disabled after this is merged. I don't want to make changes to that workflow as it will be dead until we fix it (would rather preserve it in the state it used to work rather than in a changed further broken state).

[AndrewSisley]

question: Why does this not remove the lint stuff from the lint-then-benchmark workflow?

That entire workflow file will be disabled after this is merged. I don't want to make changes to that workflow as it will be dead until we fix it (would rather preserve it in the state it used to work rather than in a changed further broken state).

Those are good reasons, cheers for the explanation :)

[AndrewSisley]

LGTM :)