BIP352: PSBT support

The ongoing development of a Bitcoin Improvement Proposal (BIP) focuses on introducing changes to enhance spending silent payment outputs. This effort is documented through a GitHub gist and a mailing list post, both of which provide comprehensive details about the proposed modifications. The GitHub gist titled "PSBT_IN_SP_TWEAK for spending silent payment outputs" is accessible here, offering an in-depth look at the technical specifics and rationale behind the proposal. Additionally, further discourse and solicitation for feedback are taking place on a Bitcoin development mailing list, with the proposal outlined in a post available here. The initiative underscores the community's commitment to refining and advancing Bitcoin's functionality, inviting contributions and insights from developers and stakeholders involved in the ecosystem.