feat: Add vetur and svelte extensions

Author: CGNonofr

update-extensions.ts

@@ -117,6 +117,17 @@ const extensions: Extension[] = [
   }, {
     name: 'solidity',
     repository: 'juanfranblanco/vscode-solidity'
+  }, {
+    name: 'vetur',
+    repository: 'vuejs/vetur'
+  }, {
+    name: 'svelte.svelte-vscode',
+    repository: 'sveltejs/language-tools',
+    path: 'packages/svelte-vscode/',
+    mapping: {
+      './syntaxes/svelte.tmLanguage.json': './syntaxes/svelte.tmLanguage.src.yaml',
+      './syntaxes/postcss.json': './syntaxes/postcss.src.yaml'
+    }
   }
 ]