Bundle zls inside zig to make installation easier

[vegerot]

• Problem: Currently, installing zls is unintuitive
• Reason: This is because of the difficulty in matching the zls and zig versions
• Solution: Include zls inside zig, as zig lsp.

I noticed that zls isn't an official Zig project, which would mean we'd need to make this project official before bundling them together :)

[Techatrix]

Adopting ZLS into the Zig project would have far reaching consequences which have not been examined in this issue. The given reasoning is not enough. I also highly doubt that the Zig team has any interest in this and so do I.

If you don't want to go thorugh the ZLS install page, I would suggest a version management tool like ZVM.

[mlugg]

I'd also like to note (to OP; Techatrix already knows this) that an LSP implementation is considered out of scope for a Zig Software Foundation project: we aren't in the business of tying the compiler into specific protocols like this where it can be avoided. See ziglang/zig#615 for more context.