Get version from vscode's package.json

packages/vscode/src/fill/package.ts

@@ -1,2 +1,2 @@
-// TODO: obtain this in a reasonable way.
-export default { name: "vscode", version: "1.31.1" };
+import * as packageJson from "../../../../lib/vscode/package.json";
+export default { name: "vscode", version: packageJson.version };

tsconfig.json

@@ -8,6 +8,7 @@
 		"declaration": true,
 		"sourceMap": true,
 		"strict": true,
+		"resolveJsonModule": true,
 		"experimentalDecorators": true,
 		"plugins": [
 			{