cli: add and use app:lint + include default eslint config in cli

.eslintrc.js

@@ -16,39 +16,12 @@ const copyrightTemplate = `/*
 
 `;
 
+const base = require('@spotify-backstage/cli/config/eslint');
+
 module.exports = {
-  extends: [
-    '@spotify/eslint-config-base',
-    '@spotify/eslint-config-react',
-    '@spotify/eslint-config-typescript',
-    'prettier',
-    'prettier/react',
-    'prettier/@typescript-eslint',
-    'plugin:jest/recommended',
-  ],
-  parser: '@typescript-eslint/parser',
-  plugins: ['notice'],
-  env: {
-    jest: true,
-  },
-  parserOptions: {
-    ecmaVersion: 2018,
-    sourceType: 'module',
-  },
-  settings: {
-    react: {
-      version: 'detect',
-    },
-  },
-  // Adding this to .eslintignore just doesn't even, let me know if you can make it work ._.
-  ignorePatterns: [
-    '**/*_pb.js',
-    '**/*_pb.d.ts',
-    '**/dist/**',
-    '**/cjs/**',
-    '**/esm/**',
-  ],
+  ...base,
   rules: {
+    ...base.rules,
     'notice/notice': [
       'error',
       {