feat: elide intellij plugin

[darvld]

Summary

This PR introduces an Intellij IDEA plugin providing support for Elide as an External Build System, which allows users to edit Elide projects in the IDE, build, run, and sync them.

Roadmap (initial plugin release)

The first release will have a basic but complete set of features to enable the use of Elide in simple projects. This includes most of the capabilities expected of an external build tool in Intellij IDEA (project sync, dependency management, building, and running).

This release will be focused on Kotlin and Java, support for other languages (and polyglot features) will be added later.

• Project auto-import and sync button.
• Read project structure (modules and content roots) from elide.pkl.
• Inform Intellij IDEA about dependencies on disk using the lockfile.
• Run elide install on project sync if the lockfile is not up to date or dependencies are not found on disk.
• Allow running Elide commands from the IDE (build, run, install).
• Suggest project entry points and scripts from the manifest in run configuration editor.
• Add "run with Elide" action to the IDE, similar to the "run Gradle task" action.
• Add the ability to run entry points with Elide when clicked from the "run" gutter icon.
• Allow forcing a specific Elide distribution to be used given its path in the settings.
• Add notification to install Elide if it is not found on PATH and no custom distribution is selected.
• Basic highlighting of elide.pkl.
• Run gutter icons in project manifest for entry points and scripts.

Additional features (future releases)

In the future, the plugin will be enhanced with quality-of-life features and a better integration with the rest of the languages supported by Elide.

• Add the ability to run JVM tests with Elide.
• Add debug capabilities for JVM languages.
• New project wizard templates for Elide projects (using elide init or otherwise).
• Improved integration with Pkl plugin for manifest editing.
  • Injection of fully qualified class names and file paths for entry points.
  • Injection of artifact names already declared in the manifest.
  • Gutter icon for running entry points and scripts.
  • Gutter icon for installing dependencies of all or specific ecosystems.
  • Gutter icon for performing individual artifact builds.
• Research adding support for non-JVM languages in the IDE (parity with JVM features).
• Research adding support for polyglot projects in the IDE (cross-language features).

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 42 lines in your changes missing coverage. Please review.

Project coverage is 40.02%. Comparing base (6078f29) to head (bbc1ae6).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
.../src/main/kotlin/elide/tooling/jvm/JvmLibraries.kt	0.00%	42 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1505      +/-   ##
==========================================
- Coverage   40.20%   40.02%   -0.19%     
==========================================
  Files         701      702       +1     
  Lines       32830    32850      +20     
  Branches     4569     4576       +7     
==========================================
- Hits        13200    13148      -52     
- Misses      18082    18159      +77     
+ Partials     1548     1543       -5     

Flag	Coverage Δ
jvm	40.02% <0.00%> (-0.19%)	⬇️
lib	40.02% <0.00%> (-0.19%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...n/kotlin/elide/tooling/jvm/JvmBuildConfigurator.kt	0.00% <ø> (ø)
...lide/tooling/jvm/resolver/MavenLockfileResolver.kt	0.00% <ø> (ø)
.../src/main/kotlin/elide/tooling/jvm/JvmLibraries.kt	0.00% <0.00%> (ø)

... and 6 files with indirect coverage changes

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