Adheres to https://zeitgeist.subsquare.io/post/2

 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 transparency and accountability in decision-making processes within the Polkassembly Council.

Significance:
- Important for the Polkassembly Council to have transparent and accountable decision-making processes to ensure fair representation and effective governance.

Proposed Solution:
- Implement a voting system on Polkassembly that allows Council members to vote on proposals and decisions.

Expected Outcomes:
- Increased transparency and accountability in decision-making processes within the Polkassembly Council.

#12 Increase active collator set size to 16