Feature Request: Add context menu commands for .g4 files

[johnholliday]

Add an ANTLR context menu for .g4 files to quickly execute common commands against the grammar without having to open the file.

[mike-lischke]

What commands do you have in mind? Can you give an example?

[johnholliday]

Here I'm thinking of a kind of "extensibility model" for ANTLR that could invoke dotnet tools that are configured in the settings. That way if developers have other tools that can manipulate an ANTLR grammar, they could easily add them to the settings and invoke them from the file context menu.

As an example, I'm working on a tool that uses generative AI to analyze an ANTLR grammar to produce various artifacts that depend on the objects defined by the grammar. I can install the tool as a local dotnet tool, but to use it I have to work outside of VSCode or drop down into the integrated terminal. Having it appear on the context menu makes it easier, but also reminds me that the tool is available, etc.