<p>This referendum is to add the ARS and PEN token to the Pendulum token allowance pallet, which would enable it as swap pool on Forex AMM and offramping support on Vortex</p>

This referendum is to add the ARS and PEN token to the Pendulum token allowance pallet, which would enable it as swap pool on Forex AMM and offramping support on Vortex

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)`

Added allowed currencies that possible to use chain extension

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

- **Problem Statement:** Introducing ARS and PEN tokens to the Pendulum token allowance pallet for swap pool on Forex AMM and offramping support on Vortex.
- **Significance:** Enhancing token accessibility and functionality on Forex AMM and Vortex.
- **Proposed Solution:** Adding ARS and PEN tokens to the Pendulum token allowance pallet.
- **Expected Outcomes:** Increased token utility and trading options on Forex AMM and Vortex.

#55 Add ARS (Peso Digital) and PEN (Sol Digital) token to the Pendulum token allowance pallet