<p>This referendum it to unblock the Forex AMM deployment on the Pendulum network by adding the two tokens USDC (AssetHub) and DOT to the token allowance pallet.</p>

This referendum it to unblock the Forex AMM deployment on the Pendulum network by adding the two tokens USDC (AssetHub) and DOT to the token allowance pallet.

Added allowed currencies that possible to use chain extension

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

- **Problem Statement:** Unblock Forex AMM deployment on Pendulum network by adding USDC and DOT tokens.
- **Significance:** Facilitates the deployment of Forex AMM on Pendulum network.
- **Proposed Solution:** Add USDC and DOT tokens to the token allowance pallet.
- **Expected Outcomes:** Enable the deployment of Forex AMM on Pendulum network, enhancing its functionality.

#49 Allowlist USDC and DOT to token allowance pallet