feat: add method-signature-style rule

src/ts.js

@@ -21,6 +21,7 @@ module.exports = {
     '@typescript-eslint/no-this-alias': 'off', // allow 'const self = this'
     '@typescript-eslint/await-thenable': 'error', // disallows awaiting a value that is not a "Thenable"
     '@typescript-eslint/restrict-template-expressions': 'off', // allow values with `any` type in template literals
+    '@typescript-eslint/method-signature-style': 'method', // enforce method signature style
     'no-return-await': 'off', // disable this rule to use @typescript-eslint/return-await instead
     '@typescript-eslint/return-await': ['error', 'in-try-catch'], // require awaiting thenables returned from try/catch
     'jsdoc/require-param': 'off', // do not require jsdoc for params