Add check for cloud access token expiration on ping events

[RicArch97]

Issue

• Token expiration is currently only checked on action events (like stateStateUpdate, PresenceEvent etc)

Expected result

• A check of token expiration on ping events would mean the connection could be restored in 30 seconds, rather than waiting on one of the other events, which are situational and might not occur in a while.

Reproduce steps

1. Login with {"ttl": 5} (or similar) in the login JSON
2. Wait more than 30 seconds (ping event comes in), check if reconnected
3. Now switch a Crownstone, check if reconnected