Add plugin hooks into mdapi retrieve, deploy, convert and source convert

[gdman]

Is your feature request related to a problem? Please describe.

The Plugin Hooks feature is great and opens up a whole load of new customisation possibilities but at the moment they only apply to the force:source:retrieve and deploy commands.

The force:mdapi commands are not going anywhere anytime soon so it would be great to hook into them.

I'd suggest having pre and post hooks for the following:

• force:mdapi:retrieve
• force:mdapi:deploy
• force:mdapi:convert
• force:source:convert

What are you trying to do

I'd like any hooks I write for preretrieve and postretrieve to also work with the MDAPI commands (including converting between formats) else force:source:retrieve would have different source code to force:mdapi:retrieve + force:mdapi:convert.

I'd like to be able to hook into predeploy with the MPAPI (I still have to convert and use force:mdapi:deploy instead of force:source:deploy due to other bugs and limitations).

Describe the solution you'd like

I'd suggest having pre and post hooks for the following:

• force:mdapi:retrieve
• force:mdapi:deploy
• force:mdapi:convert
• force:source:convert

Describe alternatives you've considered

I'm unaware of any alternatives.

Additional context

Be sure to checkout #743 before adding new hooks (else the same issue will likely be introduced in more places)

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[github-actions[bot]]

Thank you for filing this feature request. We appreciate your feedback and will review the feature at our next grooming or sprint planning session. We prioritize feature requests with more upvotes and comments.