William requests retroactive funding for 18 weeks of work advancing the Polkadot ecosystem, focusing on business development, community support, education, and ecosystem coordination. Key contributions include creating the Polkadot Handbook, improving builder success strategies, onboarding new ecosystem participants, and hosting BD working groups. He also facilitated a CEX integration, produced case studies, supported governance efforts, and educated the community on multisig and other operational tools. William emphasizes transparency and seeks funding to acknowledge his significant, self-funded efforts to strengthen the ecosystem.

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