Some hover improvements

[FnControlOption]

Show "Go to Foo | Bar" instead of "Go to Foo | Go to Bar"

Before

Omit container body

Closes #1301

Enable hover and Go to References for loop label declaration

Resolve types of primitive values, enum literals, and error values

const std = @import("std");
pub fn main() void {
    const tru = true;
    std.log.info("{}", .{@TypeOf(tru)}); // bool
    const fals = false;
    std.log.info("{}", .{@TypeOf(fals)}); // bool
    const nul = null;
    std.log.info("{}", .{@TypeOf(nul)}); // @TypeOf(null)
    const undef = undefined;
    std.log.info("{}", .{@TypeOf(undef)}); // @TypeOf(undefined)
    const enum_lit = .foo;
    std.log.info("{}", .{@TypeOf(enum_lit)}); // @TypeOf(.enum_literal)
    const err = error.Foo;
    std.log.info("{}", .{@TypeOf(err)}); // error{Foo}
}

Enable hover for merged error sets

[leecannon]

@FnControlOption Looks good, just a few things about omitting container bodies.

• Errorsets still have their entire declaration shown.
• It would be nice if the explicitly provided backing integer was included, the below shows const PSE = packed struct but const PSE = packed struct(u32) would be better.

const PSE = packed struct(u32) {
    f: u32,
};

pub fn main() !void {
    var pse: PSE = undefined;
    _ = pse;
}

[leecannon]

@FnControlOption I just made a mistake, I forced pushed to your branch thinking I had a different one checked out. So the commits you added after my comment are gone, I hope you have them locally.

Sorry about this, I feel like an idiot :(

[FnControlOption]

No worries at all! I fortunately still have the commits locally, so I'll go ahead and push them again ❤️