This referendum will add two more currencies to the allow list of the currencies allowance pallet:

* Stellar EURC (issues by Circle)
* axlUSDC

This enables these two currencies to be used with our Forex AMM (powered by Nabla).

Schedule the currently externally-proposed majority-carries referendum to be tabled
immediately. If there is no externally-proposed referendum currently, or if there is one
but it is not a majority-carries referendum then it fails.

The dispatch of this call must be `FastTrackOrigin`.

- `proposal_hash`: The hash of the current external proposal.
- `voting_period`: The period that is allowed for voting on this proposal. Increased to
	Must be always greater than zero.
	For `FastTrackOrigin` must be equal or greater than `FastTrackVotingPeriod`.
- `delay`: The number of block after voting has ended in approval and this should be
  enacted. This doesn't have a minimum amount.

Emits `Started`.

Weight: `O(1)`

Added allowed currencies that possible to use chain extension

# Arguments
* `currencies` - list of currency id allowed to use in chain extension

- Problem Statement: Introducing Stellar EURC and axlUSDC to the currencies allowance pallet for the Forex AMM.
- Significance: Enhancing the usability of the Forex AMM by including additional currencies.
- Proposed Solution: Adding Stellar EURC and axlUSDC to the currencies allowance pallet.
- Expected Outcomes: Improved functionality and diversity in the Forex AMM, benefiting users and expanding the platform's capabilities.

#39 Add new assets to allow list of tokens allowance pallet

No Active Proposals