L1 changes

• [ ] Update ChannelState to include the new information defined in the spec for decentralized sequencing
• [ ] Rename ChannelSetKeys to ChannelConfig and add the new values defined in the spec
• [ ] Update inscription verification logic to check for sequencer authorization

L2-SDK changes

• [ ] Expose an operation to create a new channel with a set of keys and all the different params required
• [ ] Expose an operation to change a channel configuration
• [ ] Add configuration option for establishing gossipsub network with other sequencers to gossip transactions (no blocks)
• [ ] Functionality to derive round-robin logic given the latest channel state