Investigate moving verify_delay_passed to a more appropriate section

[Farhad-Shabani]

Summary

Context: #393 (comment)
The implemented verify_delay_passed method inside the 07_tendermint doesn't seem a client-specific process and it should be placed somewhere in the "connection" part of the stack. The issue arose because we wanted to stop passing the ctx field into some of the verification methods like verify_packet_acknowledgement