move frontend to a cmd too for consistency

cmd/frontend/.eslintrc.cjs

@@ -0,0 +1,19 @@
+module.exports = {
+	extends: ['plugin:svelte/base', 'plugin:svelte/recommended', 'plugin:svelte/prettier'],
+	overrides: [
+		{
+			files: ['*.svelte'],
+			parser: 'svelte-eslint-parser'
+		}
+	],
+	env: {
+		es6: true
+	},
+	parserOptions: {
+		ecmaFeatures: {
+			experimentalObjectRestSpread: true,
+			jsx: true
+		},
+		sourceType: 'module'
+	}
+};