Clean up whitespace (#10755)

I saved the `file_types.json` file and got a diff because it had some
trailing whitespace. I ran
[`lineman`](https://github.com/JosephTLyons/lineman) on the codebase.
I've done this before, but this time, I've added in the following
settings to our `.zed` local settings, to make sure every future save
respects our desire to have consistent whitespace formatting.

```json
"remove_trailing_whitespace_on_save": true,
"ensure_final_newline_on_save": true
```

Release Notes:

- N/A

extensions/lua/languages/lua/brackets.scm

@@ -1,3 +1,3 @@
 ("[" @open "]" @close)
 ("{" @open "}" @close)
-("(" @open ")" @close)
+("(" @open ")" @close)

extensions/lua/languages/lua/indents.scm

@@ -7,4 +7,4 @@
 
 (_ "[" "]" @end) @indent
 (_ "{" "}" @end) @indent
-(_ "(" ")" @end) @indent
+(_ "(" ")" @end) @indent

extensions/lua/languages/lua/outline.scm

@@ -1,3 +1,3 @@
 (function_declaration
     "function" @context
-    name: (_) @name) @item
+    name: (_) @name) @item