refactor(lsp): group handler related modules together

Move all the modules that are specific to the handler into their own
module to thin out the root module.

crates/stef-lsp/src/handlers.rs → crates/stef-lsp/src/handlers/mod.rs

@@ -14,7 +14,11 @@ use lsp_types::{
 };
 use ropey::Rope;
 
-use crate::{compile, document_symbols, semantic_tokens, state::FileBuilder, GlobalState};
+use crate::{state::FileBuilder, GlobalState};
+
+mod compile;
+mod document_symbols;
+mod semantic_tokens;
 
 pub fn initialize(
     _state: &mut GlobalState<'_>,

crates/stef-lsp/src/main.rs

@@ -20,12 +20,9 @@ use crate::state::GlobalState;
 
 mod cli;
 mod client;
-mod compile;
 mod config;
-mod document_symbols;
 mod handlers;
 mod logging;
-mod semantic_tokens;
 mod state;
 
 fn main() -> Result<()> {