Updates to funding bylaw

[KorvinSzanto]

This PR updates the funding bylaws to clarify disbursement, expand allowed funding options, and more.

Key changes are:

• Remove Tidelift as a collection option since they have been purchased and their mission has changed
• Grant permission to collect funding via opencollective directly
• Grant permission to set up print on demand swag options, at the discretion of the secretaries with (essentially) implicit approval from the core committee
• Define clear policy for when, how, how much, and to whom disbursements are made
• Explicitly allow repayment to individuals who have covered an expense, so funding at a later date in the year can be used to reimburse folks that quietly cover costs out of their own pocket

And here's what copilot thinks changed (Reviewed by me, no changes were needed):

This pull request updates the PHP-FIG funding bylaws to refine the organization's approach to raising and managing funds. Key changes include clarifying the funding sources, introducing new methods for contributions, and revising spending guidelines to ensure transparency and alignment with PHP-FIG's mission.

Updates to funding sources and methods:

• Revised the language to emphasize PHP-FIG's focus on funding from commercial entities benefiting from the PHP ecosystem, rather than private individuals.
• Added provisions for accepting contributions via Open Collective with detailed requirements for transparency and accountability, including itemized reporting of transactions.
• Introduced a new option for generating revenue through print-on-demand swag, with specific guidelines for product creation, ethical sourcing, and community oversight.

Spending guidelines and overfunding management:

• Updated rules for spending funds to allow reimbursement for approved expenses paid out-of-pocket by Secretaries, while maintaining restrictions on personnel payments.
• Defined "overfunding" and established a process for disbursing surplus funds annually to the PHP Foundation, with safeguards for tax and fee considerations.

Administrative adjustments:

• Clarified the approved expenses section and updated the formatting for consistency.

[Copilot]

Pull Request Overview

This PR updates the funding bylaws for PHP-FIG to clarify funding sources, expand approved funding methods, and define clear guidelines for disbursements and expense approvals.

• Removed TideLift as a collection option
• Introduced new provisions for contributions via Open Collective and print-on-demand swag
• Defined policies for overfunding disbursement and updated approved expenses guidelines

[Jean85]

I overall like the changes, I'm just suggesting two small changes