add CI pipeline with lint, test, build

eslint.config.mjs

@@ -0,0 +1,9 @@
+import js from "@eslint/js";
+import globals from "globals";
+import tseslint from "typescript-eslint";
+import { defineConfig } from "eslint/config";
+
+export default defineConfig([
+  { files: ["**/*.{js,mjs,cjs,ts,mts,cts}"], plugins: { js }, extends: ["js/recommended"], languageOptions: { globals: globals.node } },
+  tseslint.configs.recommended,
+]);