add frontend skeleton

frontend/.eslintrc.cjs

@@ -0,0 +1,31 @@
+/** @type { import("eslint").Linter.Config } */
+module.exports = {
+	root: true,
+	extends: [
+		"eslint:recommended",
+		"plugin:@typescript-eslint/recommended",
+		"plugin:svelte/recommended",
+		"prettier",
+	],
+	parser: "@typescript-eslint/parser",
+	plugins: ["@typescript-eslint"],
+	parserOptions: {
+		sourceType: "module",
+		ecmaVersion: 2020,
+		extraFileExtensions: [".svelte"],
+	},
+	env: {
+		browser: true,
+		es2017: true,
+		node: true,
+	},
+	overrides: [
+		{
+			files: ["*.svelte"],
+			parser: "svelte-eslint-parser",
+			parserOptions: {
+				parser: "@typescript-eslint/parser",
+			},
+		},
+	],
+};