[Spike] How to migrate iOS LB3 client

[dhmlau]

Originated from epic: #3954

A spike on migrating iOS LB3 client.
From @bajtos, we might want a ObjC or Swift client.

Acceptance Criteria

• Find out how to migrate an iOS LB3 client.
• Expected outcome:
  • our recommended approach and description on how to do it.
  • create a follow up task, if needed, to add the instruction as part of the migration guide

[stale]

This issue has been marked stale because it has not seen activity within six months. If you believe this to be in error, please contact one of the code owners, listed in the CODEOWNERS file at the top-level of this repository. This issue will be closed within 30 days of being stale.

[stale]

This issue has been closed due to continued inactivity. Thank you for your understanding. If you believe this to be in error, please contact one of the code owners, listed in the CODEOWNERS file at the top-level of this repository.