Approve a proposal. At a later time, the proposal will be allocated to the beneficiary
and the original deposit will be returned.

May only be called from `T::ApproveOrigin`.

# <weight>
- Complexity: O(1).
- DbReads: `Proposals`, `Approvals`
- DbWrite: `Approvals`
# </weight>

- **Problem Statement:** Lack of funding for community projects on Polkassembly.
- **Significance:** Enhancing community engagement and development.
- **Proposed Solution:** Allocate 500 DOT to fund community proposals.
- **Expected Outcomes:** Increased participation and growth in the Polkassembly community.

#291 Samsara Funding Q1/Q2 '24

No Active Proposals