Propose and approve a spend of treasury funds.

## Dispatch Origin

Must be [`Config::SpendOrigin`] with the `Success` value being at least `amount`.

### Details
NOTE: For record-keeping purposes, the proposer is deemed to be equivalent to the
beneficiary.

### Parameters
- `amount`: The amount to be transferred from the treasury to the `beneficiary`.
- `beneficiary`: The destination account for the transfer.

## Events

Emits [`Event::SpendApproved`] if successful.

- Problem Statement: Lack of clarity on the Polkassembly ReferendumV2 for users.
- Significance: Ensuring transparency and understanding for users participating in the referendum.
- Proposed Solution: Implementing a detailed explanation of the referendum process.
- Expected Outcomes: Increased user engagement and informed decision-making.

#262 test

No Active Proposals