feat: Add support for specifying an IntelliJ module name prefix

[ryanhanks]

Description

This change came about as a result of discussion around the 'melos_' string that is prepended to IntelliJ project module names, and the desire for that prefix to be blank.

The IntelliJ configuration parser currently assumes a single boolean value, so the parser has been updated to now support a map with which to specify intelliJ config.

The default value of enabled can now be overrode via an enabled key in the intellij map, and the parser continues support the current configuration approach, whereby the intellij key is set to a boolean value:

ide:
  intellij:
    enabled: false  # this is now the documented approach

ide:
  intellij: false        # the config parser will support this schema also

This map now allows for the specification of an alternative project module name prefix:

ide:
  intellij:
    moduleNamePrefix: ''   # set to empty string to override default value of 'melos_'

Type of Change

• [x] ✨ feat -- New feature (non-breaking change which adds functionality)
• [x] 📝 docs -- Documentation

Notes

• I added docs around the current integration with IntelliJ to the best of my knowledge. Let me know what I missed.

[CLAassistant]

All committers have signed the CLA.

[ryanhanks]

Also, I didn't update the current melos.yaml config for this project, a I thought it might break CI. Lmk if we should include a change for that in this PR or if it can / should be addressed at another time.

[ryanhanks]

Looks like I missed a couple things here. Updates to follow in the next day or few.

[blaugold]

Thanks for this contribution! Looks great, aside from the analyzer errors (just some style issue) and formatting.

Also, I didn't update the current melos.yaml config for this project, a I thought it might break CI. Lmk if we should include a change for that in this PR or if it can / should be addressed at another time.

I think it's fine to leave it as is for now.

[ryanhanks]

Thanks blaugold 👍

For transparency, in addition to the style cleanup, I missed tracing the "melos_" prefix all the way down the stack, and it looks like it exists in hard-coded form beyond the areas I've addressed thus far, e.g., https://github.com/invertase/melos/blob/70448bec7d8cf5f8d0a8dc8c2660e70033936329/packages/melos/lib/src/common/intellij_project.dart#L82-L84 (I also noticed this value is hard-coded in the clean-up script)

[blaugold]

Hey @ryanhanks, I've rebased the PR and added the use of moduleNamePrefix in all places where module names are built. For the run configurations, we should keep using the hard-coded prefix. I think it's ready to be merged. WDYT?

[ryanhanks]

Hey @blaugold

I pulled it down and gave it a run this morning, looks good to me!

I must say, on my repo of 26 projects, it was v nice to open IntelliJ and see the results of this work :)

Thanks for cleaning this up! Feel free to merge whenever you're ready.