This proposal aims to register Tether USD from AssetHub (Polkadot native) on Zeitgeist.

Schedule a majority-carries referendum to be tabled next once it is legal to schedule
an external referendum.

The dispatch of this call must be `ExternalMajorityOrigin`.

- `proposal_hash`: The preimage hash of the proposal.

Unlike `external_propose`, blacklisting has no effect on this and it may replace a
pre-scheduled `external_propose` call.

Weight: `O(1)`

- **Problem Statement:** Register Tether USD from AssetHub on Zeitgeist for the Polkassembly Council.
- **Significance:** Enhancing the usability and accessibility of Tether USD on the Polkadot network.
- **Proposed Solution:** Register Tether USD from AssetHub on Zeitgeist.
- **Expected Outcomes:** Improved integration of Tether USD on the Polkadot network.

#51 Register Tether USD (Polkadot AssetHub)