tenant: add invites and join requests

backend/app/http/tenantjoin/routes.manual.go

@@ -0,0 +1,12 @@
+package tenantjoin
+
+func (r *Routes) Path() string {
+	return "/t/:tenantCode/v1"
+}
+
+func (r *Routes) Middlewares() []any {
+	return []any{
+		r.middlewares.TenantResolve,
+		r.middlewares.TenantAuth,
+	}
+}