rdk ibc: Consolidate canonical channel/port across hub genesis and hub modules

[danwt]

see also #467

cc @zale144

[danwt]

IIRC there was some canonical channel concept introduced on the rollapp when Alex and I did the genesis transfers and the denom metadata work,
These are old issues, but need to be done/double checked
I'm just looking now

dymension-rdk/x/hub-genesis/types/state.go

Lines 28 to 30 in 74f2127

	func (s *State) IsCanonicalHubTransferChannel(port, channel string) bool {
	return s.CanonicalHubTransferChannelHasBeenSet() && s.HubPortAndChannel.Port == port && s.HubPortAndChannel.Channel == channel
	}

Yeah I think we need to write an upgrade on the rollapp to set canonical channel for existing rollapps

state.go
func (s *State) IsCanonicalHubTransferChannel(port, channel string) bool {
return s.CanonicalHubTransferChannelHasBeenSet() && s.HubPortAndChannel.Port == port && s.HubPortAndChannel.Channel == channel
}