feat: adds frag snippet

Author: wavilikhin

src/snippets/html.json

@@ -157,5 +157,6 @@
 
 	"c": "{<!-- ${0} -->}",
 	"cc:ie": "{<!--[if IE]>${0}<![endif]-->}",
-	"cc:noie": "{<!--[if !IE]><!-->${0}<!--<![endif]-->}"
+	"cc:noie": "{<!--[if !IE]><!-->${0}<!--<![endif]-->}",
+	"frag": "{<>${0}</>}"
 }

test/fragment.ts

@@ -0,0 +1,7 @@
+import {describe} from 'node:test';
+import {strictEqual as equal} from 'node:assert';
+import expand from '../src';
+
+describe('frag', () => {
+    equal(expand('frag'), '<></>');
+});