chore(eslint): relax indent/quotes/linebreak rules to warnings for incremental cleanup

Author: Medalcode

.eslintrc.json

@@ -9,9 +9,9 @@
     "sourceType": "module"
   },
   "rules": {
-    "indent": ["error", 2],
-    "linebreak-style": ["error", "unix"],
-    "quotes": ["error", "double"],
+    "indent": ["warn", 2],
+    "linebreak-style": ["warn", "unix"],
+    "quotes": ["warn", "double"],
     "semi": ["error", "always"],
     "no-unused-vars": "warn",
     "no-console": "off",