feat(server): support selfhost licenses (#8947)

packages/backend/server/src/mails/index.tsx

@@ -7,6 +7,7 @@ import {
   TeamDeleteInOneMonth,
   TeamExpired,
   TeamExpireSoon,
+  TeamLicense,
   TeamWorkspaceDeleted,
   TeamWorkspaceUpgraded,
 } from './teams';
@@ -175,3 +176,8 @@ export const renderTeamWorkspaceExpiredMail = make(
   TeamExpired,
   props => `Your ${props.workspace.name} team workspace has expired`
 );
+
+export const renderTeamLicenseMail = make(
+  TeamLicense,
+  'Your AFFiNE Self-Hosted Team Workspace license is ready'
+);