Proposal: Centrifuge quest platform for Canton ecosystem

This proposal is submitted by an active Canton Network Validator (https://github.com/Validator-POSTHUMAN).

Proposal to integrate the Centrifuge community quest platform as a public good tool for the Canton ecosystem.

The platform enables structured learning and engagement for community members and is already proving effective for Canton.

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Note: This is a re-submission of PR #58 which was automatically closed due to fork deletion.