Change ICS4Wrapper interface to use channeltypes.Packet in WriteAcknowledgement interface func

[colin-axner]

Summary

We should make this change in conjunction with the next required breaking changes to the WriteAcknowledgement function in the ICS4Wrapper. I suspect this might be when we move the interface to its own api go.mod. We cannot make this change until then to avoid disruption

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[colin-axner]

We can remove exported.PacketI when we remove this usage as well

[hoangdv2429]

Can I work on this one sir @colin-axner

[colin-axner]

Hi @hoangdv2429, thanks for your interest, but for now we will need to let this issue sit some time longer. We don't want to break the existing interface unless we have to, so we will let this one be for now

[colin-axner]

Also going to note the work in #5819 might remove the ICS4Wrapper entirely or replace it with some new interface