feat: prisma schema, groups API, deploy workflow

app/server/api/groups/index.get.ts

@@ -0,0 +1,8 @@
+import { requireAuth } from '~/server/utils/auth'
+import { groups } from '~/server/utils/db'
+
+export default defineEventHandler(async (event) => {
+  requireAuth(event)
+  const allGroups = Array.from(groups.values()).filter(g => g.isPublic)
+  return { groups: allGroups }
+})