Use tRPC for recent groups page (#253)

* Use tRPC for recent groups page

* Use tRPC for adding group by URL

* Use tRPC for saving visited group

* Group context

src/trpc/routers/groups/get.procedure.ts

@@ -1,19 +1,10 @@
-import { getGroup, getGroupExpensesParticipants } from '@/lib/api'
+import { getGroup } from '@/lib/api'
 import { baseProcedure } from '@/trpc/init'
-import { TRPCError } from '@trpc/server'
 import { z } from 'zod'
 
 export const getGroupProcedure = baseProcedure
   .input(z.object({ groupId: z.string().min(1) }))
   .query(async ({ input: { groupId } }) => {
     const group = await getGroup(groupId)
-    if (!group) {
-      throw new TRPCError({
-        code: 'NOT_FOUND',
-        message: 'Group not found.',
-      })
-    }
-
-    const participantsWithExpenses = await getGroupExpensesParticipants(groupId)
-    return { group, participantsWithExpenses }
+    return { group }
   })