refactor: Add more checks to pre-commit

Updated existing pre-commit hooks and added some new hooks:

- Remove trailing whitespace
- Ensure every non-empty file ends with a new line
- Check YAML file validity
- Prevent adding large files
- Ensure any scripts with shebangs are executable

Added a GitHub action to run pre-commit on every commit. Removed any
existing actions which duplicate pre-commit.

Ran pre-commit on the codebase.

docs/package.json

@@ -58,7 +58,7 @@
     "mustache": "^4.2.0",
     "null-loader": "^4.0.0",
     "prebuild-webpack-plugin": "^1.1.1",
-    "prettier": "2.3.1",
+    "prettier": "^2.7.1",
     "string-replace-loader": "^3.1.0",
     "typescript": "^4.6.3",
     "webpack": "^5.72.1"