build: switch from yarn to npm to manage js dependencies and move js contents to root

yarn v1 is being deprecated and starts to have some issues

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

src/vue-apollo.ts

@@ -0,0 +1,11 @@
+import { ApolloClient, NormalizedCacheObject } from "@apollo/client/core";
+import buildCurrentUserResolver from "@/apollo/user";
+import { cache } from "./apollo/memory";
+import { fullLink } from "./apollo/link";
+
+export const apolloClient = new ApolloClient<NormalizedCacheObject>({
+  cache,
+  link: fullLink,
+  connectToDevTools: true,
+  resolvers: buildCurrentUserResolver(cache),
+});