Breakout rooms update readme (#242)

* add in missing storage collection methods

* add in missing storage collection methods

examples/breakout-rooms/README.md

@@ -41,6 +41,11 @@ https://github.com/miroapp/app-examples/assets/7162412/e03987e3-f85b-48ab-86b8-f
 - [Real-time storage](https://developers.miro.com/docs/websdk-reference-storage)
 
   - [miro.board.storage.collection()](https://developers.miro.com/docs/websdk-reference-storage#collection) [in hooks.tsx](https://github.com/miroapp/app-examples/blob/main/examples/breakout-rooms/src/hooks.tsx#L52)
+  - [miro.board.storage.collection.set()](https://developers.miro.com/docs/websdk-reference-collection#set) [in hooks.tsx](https://github.com/miroapp/app-examples/blob/main/examples/breakout-rooms/src/hooks.tsx#L89)
+  - [miro.board.storage.collection.get()](https://developers.miro.com/docs/websdk-reference-collection#get) [in hooks.tsx](https://github.com/miroapp/app-examples/blob/main/examples/breakout-rooms/src/hooks.tsx#L60)
+  - [miro.board.storage.collection.remove()](https://developers.miro.com/docs/websdk-reference-collection#remove) [in hooks.tsx](https://github.com/miroapp/app-examples/blob/main/examples/breakout-rooms/src/hooks.tsx#L409)
+  - [miro.board.storage.collection.onValue](https://developers.miro.com/docs/websdk-reference-collection#onvalue) [in hooks.tsx](https://github.com/miroapp/app-examples/blob/main/examples/breakout-rooms/src/hooks.tsx#L61)
+  - [miro.board.storage.collection.offValue](https://developers.miro.com/docs/websdk-reference-collection#offvalue) [in hooks.tsx](https://github.com/miroapp/app-examples/blob/main/examples/breakout-rooms/src/hooks.tsx#L64)
 
 - [Timer](https://developers.miro.com/docs/websdk-reference-timer)
   - [miro.board.timer.get()](https://developers.miro.com/docs/websdk-reference-timer#get) [in hooks.tsx](https://github.com/miroapp/app-examples/blob/main/examples/breakout-rooms/src/hooks.tsx#L541)