feat: implement collections syncing for selfhosted (#42)

packages/hoppscotch-selfhost-web/src/main.ts

@@ -1,10 +1,12 @@
 import { createHoppApp } from "@hoppscotch/common"
 import { def as authDef } from "./platform/auth"
 import { def as environmentsDef } from "./platform/environments/environments.platform"
+import { def as collectionsDef } from "./platform/collections/collections.platform"
 
 createHoppApp("#app", {
   auth: authDef,
   sync: {
     environments: environmentsDef,
+    collections: collectionsDef,
   },
 })