[native] implement prekey rotation handler and call Identity

Summary:

1. Change JSI method to accept metadata to properly auth with Identity
2. Add component to call this after app is opened
3. Add line to call Identity RPC using std::promise

Test Plan:

1. Test if method is called
2. Test if uploading works (can be done by making prekey rotation is needed) and verify this by inspecting DDB content
3. Test if old cryptoModule is restored when RPC fails

Reviewers: marcin, michal, varun

Reviewed By: marcin

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D10631