feat(challenge26): forbidden enum rule

tools/eslint-rules/tsconfig.lint.json

@@ -0,0 +1,9 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../dist/out-tsc",
+    "types": ["node"]
+  },
+  "exclude": ["**/*.spec.ts"],
+  "include": ["**/*.ts"]
+}