fix(prefer-readonly-parameter-types): add rule

Author: RebeccaStevens

src/plugins/typescript.ts

@@ -128,6 +128,7 @@ export const settings: Linter.Config = {
     "@typescript-eslint/prefer-includes": "warn",
     "@typescript-eslint/prefer-nullish-coalescing": "warn",
     "@typescript-eslint/prefer-optional-chain": "warn",
+    "@typescript-eslint/prefer-readonly-parameter-types": "warn",
     "@typescript-eslint/prefer-string-starts-ends-with": "warn",
     "@typescript-eslint/prefer-ts-expect-error": "warn",
     "@typescript-eslint/switch-exhaustiveness-check": "warn",