Bump all samples to use toolkit package v1.0 (microsoft#78)

Description of changes

Update all samples to use the latest version of the `@vscode/webview-ui-toolkit` package.

Author: hawkticehurst

default/component-gallery/package-lock.json

@@ -46,6 +46,6 @@
   },
   "dependencies": {
     "@vscode/codicons": "^0.0.21",
-    "@vscode/webview-ui-toolkit": "^0.9.2"
+    "@vscode/webview-ui-toolkit": "^1.0.0"
   }
 }