Add metadata (#45)

* Add wasm-pack metadata
* Add Wasm tests directory
* Add basic Cargo manifest metadata
* Make web frontend unpublishable to npm

client/web/package.json

@@ -2,6 +2,7 @@
 	"name": "graphite-web-frontend",
 	"version": "0.1.0",
 	"description": "Graphite's web app frontend. Planned to be replaced by a Rust native GUI framework in the future.",
+	"private": true,
 	"scripts": {
 		"serve": "vue-cli-service serve",
 		"build": "vue-cli-service build",