feat: add project_partner table

[blushi]

Description

ref: https://github.com/regen-network/rnd-dev-team/issues/1857

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Author Checklist

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I have...

• [x] targeted dev branch
• [x] provided a link to the relevant issue or specification
• [x] reviewed "Files changed" and left comments if necessary
• [x] confirmed all CI checks have passed
• [ ] submit a PR against master branch after this one (and other PRs depending on this one, e.g. on regen-network/regen-web, if applicable) get merged

Reviewers Checklist

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I have...

• [ ] confirmed all author checklist items have been addressed
• [ ] reviewed code correctness and readability
• [ ] reviewed documentation is accurate
• [ ] reviewed tests
• [ ] manually tested (if applicable)