chore: update .gitignore and tsconfig.json

- I often find myself testing formatting on more than one test file, so now files like `test2.js` in the root are ignored.
- Coverage reports contain JS files. `tsc` should ignore them.

.gitignore

@@ -3,7 +3,7 @@
 /scripts/release/node_modules
 *.log
 /errors
-/test.*
+/test*.*
 /.vscode
 /dist
 /website/node_modules