Use ts-go for building our extensions

Also reverts to use experimental decorators due to stage 3 decorators not being supported yet https://github.com/microsoft/typescript-go/issues/2354

The skipLib check is needed to work around some jsdom types issues

extensions/notebook-renderers/tsconfig.json

@@ -12,7 +12,8 @@
 		],
 		"typeRoots": [
 			"./node_modules/@types"
-		]
+		],
+		"skipLibCheck": true
 	},
 	"include": [
 		"src/**/*",