feat: resolve metadata type using file extension

[scolladon]

Explain your changes

---

Allow to resolve metadata type using the file extension instead of the folder when possible.

Fallback is to use the folder extension for those types:

• LightningWebComponent
• StaticResource

Does this close any currently open issues?

---

closes #642 #350

• Jest tests added to cover the fix.
• NUT tests added to cover the fix.
• E2E tests added to cover the fix.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e324f00) 100.00% compared to head (43792fa) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #750   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files           36        37    +1     
  Lines         1003      1021   +18     
  Branches       100       104    +4     
=========================================
+ Hits          1003      1021   +18     

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[scolladon]

Hi @fedegiust, @jverelst & @jjulicher !

We have a first working implementation of the metadata detection based on the extension first !

Could you please help us in validating this feature ?

If you are interested in the spec it is written here.
If you think we can add more cases feel free to suggest !

The code currently handles all the special cases we have found so far. Even the one when we have the same extension but not the same metadata type because it is not contained in the same folder (one of the most tricky to make work with all the other cases)

In order to test it locally, you can follow those steps and install this PR.

Let us know, we will merge it soon and ship a new release asap

[mehdicherf]

@scolladon As discussed, let's include this one (and #740 ) in a release candidate, to make it easier to test it extensively 😃

[codeclimate]

Code Climate has analyzed commit 43792fa and detected 0 issues on this pull request.

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[github-actions]

Shipped in release v5.35.0.
You can install the new version using the version number or the latest-rc channel

$ sfdx plugins:install sfdx-git-delta@latest-rc
$ sfdx plugins:install [email protected]

Happy incremental deployment!