ICS04: Timeouts for Packet receiving

[mossid]

Packet timeouts are defined under Timeouts in ICS04. The current implementation does not receive timeout packets, but except that no timeout logics are implemented.

Sending end

timeoutPacket may be implemented as

Manager.Timeout(ctx sdk.Context, proofs []commitment.Proof, height uint64, portid, chanid string, packet Packet, nextSequenceReceive uint64)

Timing-out on close

timeoutOnClose may be implemented as

Manager.TimeoutOnClose(ctx sdk.Context, proofs []commitment.Proof, height uint64, portid, chanid string, packet Packet)

[fedekunze]

Closed via #4548