feat: eslint extras (#42)

BREAKING CHANGE: many new ESLint rules applied

Author: iamturns

.eslintrc.js

@@ -1,7 +1,18 @@
 module.exports = {
+  plugins: [
+    "@typescript-eslint",
+    "eslint-comments",
+    "jest",
+    "promise",
+    "unicorn",
+  ],
   extends: [
     "airbnb-typescript",
     "plugin:@typescript-eslint/recommended",
+    "plugin:eslint-comments/recommended",
+    "plugin:jest/recommended",
+    "plugin:promise/recommended",
+    "plugin:unicorn/recommended",
     "prettier",
     "prettier/react",
     "prettier/@typescript-eslint",