chore: team stuff (#1228)

- Added functionality to decline team invitations
- Added email notifications for when team is deleted
- Added email notifications for team members joining and leaving

packages/trpc/server/team-router/schema.ts

@@ -53,6 +53,10 @@ export const ZAcceptTeamInvitationMutationSchema = z.object({
   teamId: z.number(),
 });
 
+export const ZDeclineTeamInvitationMutationSchema = z.object({
+  teamId: z.number(),
+});
+
 export const ZCreateTeamBillingPortalMutationSchema = z.object({
   teamId: z.number(),
 });