feat: add m1_grant, m2_grant, grant_currency fields to projects table

[Kasionchen]

Summary

This PR adds m1_grant, m2_grant, and grant_currency fields to the projects table as specified in issue #26.

Changes

• Added m1_grant NUMERIC DEFAULT 0 to projects table schema
• Added m2_grant NUMERIC DEFAULT 0 to projects table schema
• Added grant_currency TEXT DEFAULT 'USDC' to projects table schema
• Updated Project.js model to include m1Grant, m2Grant, and grantCurrency fields

Acceptance Criteria

• projects table has m1_grant and m2_grant NUMERIC fields
• projects table has grant_currency TEXT field (default 'USDC')
• API returns these new fields via Project model

[vercel]

@Kasionchen is attempting to deploy a commit to the sachalansky's projects Team on Vercel.

A member of the Team first needs to authorize it.