Add eslint and prettier to frontend

And format files

frontend/.eslintrc.json

@@ -0,0 +1,17 @@
+{
+    "extends": ["standard-with-typescript", "plugin:prettier/recommended"],
+    "plugins": ["prettier"],
+    "env": {
+        "browser": true,
+        "es2021": true
+    },
+    "parserOptions": {
+        "ecmaVersion": "latest",
+        "sourceType": "module"
+    },
+    "rules": {
+        "semi": "off",
+        "no-extra-semi": "error",
+        "@typescript-eslint/semi": "off"
+    }
+}