Cardano Updates

* docs(gov): Add Governance to Storybook

This commit will introduce Governance stories for the voting module,
enhancing the Storybook with new components and interactions for
governance-related functionalities.

* feat(gov): Add Governance DRep Discovery Plan docs

This commit will introduce the Governance DRep Discovery Plan
along with its associated tasks JSON file. The plan outlines
the full DRep Discovery flow for Daedalus users, detailing
the implementation strategy, goals, and acceptance criteria.
It will also establish a clear boundary for the project and
define the roles of various components within the system.

* docs(gov): Refine DRep Discovery plan

Update the governance enhancement plans for DRep Discovery UX
refinement feedback provided from initial goverance review and
discussions. Add ux, design, and external research supporting material
for UX implementation.

* docs(gov): Fix issues from PR#3336 review

Update the governance enhancement plans for DRep Discovery UX
refinement feedback provided from initial goverance review and
discussions. Add ux, design, and external research supporting material
for UX implementation.