Propose and approve a spend of treasury funds.

## Dispatch Origin

Must be [`Config::SpendOrigin`] with the `Success` value being at least
`amount` of `asset_kind` in the native asset. The amount of `asset_kind` is converted
for assertion using the [`Config::BalanceConverter`].

## Details

Create an approved spend for transferring a specific `amount` of `asset_kind` to a
designated beneficiary. The spend must be claimed using the `payout` dispatchable within
the [`Config::PayoutPeriod`].

### Parameters
- `asset_kind`: An indicator of the specific asset class to be spent.
- `amount`: The amount to be transferred from the treasury to the `beneficiary`.
- `beneficiary`: The beneficiary of the spend.
- `valid_from`: The block number from which the spend can be claimed. It can refer to
  the past if the resulting spend has not yet expired according to the
  [`Config::PayoutPeriod`]. If `None`, the spend can be claimed immediately after
  approval.

## Events

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

Problem Statement:
- Retroactive funding proposal for individual ecosystem agent activities from July 1 to Nov 1, 2024, focusing on BD, workgroup coordination, events, education, and support.

Significance:
- Lack of funding for activities dedicated to advancing the Polkadot ecosystem.
- Need for a comprehensive reference guide like the Polkadot Handbook to assist users, project teams, ecosystem agents, and builders in navigating the ecosystem effectively.

Proposed Solution:
- Requesting retroactive funding of $45K USDT for 25 hours per week over 18 weeks to support ecosystem agent activities.
- Development and continuous improvement of the Polkadot Handbook to cater to different user personas and provide valuable resources for the ecosystem.

Expected Outcomes:
- Enhanced support for individuals actively contributing to the Polkadot ecosystem.
- Improved accessibility to information and resources through the Polkadot Handbook, benefiting new users, experienced participants, and ecosystem representatives.

#1352 Retroactive Funding for Ecosystem Activities

No Active Proposals