Add a CI check for todo! and FIXME comments (#21950)

Motivation for this is to support writing comments that will certainly
be revisited before merge.

Release Notes:

- N/A

crates/project/src/buffer_store.rs

@@ -1668,7 +1668,7 @@ impl BufferStore {
                         .log_err();
                 }
 
-                // todo!(max): do something
+                // TODO(max): do something
                 // client
                 //     .send(proto::UpdateStagedText {
                 //         project_id,

crates/project/src/lsp_store.rs

@@ -3142,7 +3142,7 @@ impl LspStore {
     fn request_workspace_config_refresh(&mut self) {
         *self._maintain_workspace_config.1.borrow_mut() = ();
     }
-    // todo!
+
     pub fn prettier_store(&self) -> Option<Model<PrettierStore>> {
         self.as_local().map(|local| local.prettier_store.clone())
     }