chore: vscode's eslint configuration

.vscode/settings.json

@@ -1,3 +1,25 @@
 {
-		"eslint.experimental.useFlatConfig": true
+	"eslint.experimental.useFlatConfig": true,
+	"prettier.enable": false,
+	"editor.formatOnSave": false,
+	"editor.codeActionsOnSave": {
+		"source.fixAll.eslint": true,
+		"source.organizeImports": false,
+	},
+	// The following is optional.
+	// It's better to put under project setting `.vscode/settings.json`
+	// to avoid conflicts with working with different eslint configs
+	// that does not support all formats.
+	"eslint.validate": [
+		"javascript",
+		"javascriptreact",
+		"typescript",
+		"typescriptreact",
+		"vue",
+		"html",
+		"markdown",
+		"json",
+		"jsonc",
+		"yaml"
+	]
 }