Add export for room members

Part of https://gitlab.com/gitlab-org/gitter/webapp/-/issues/2557
12 jobs for !1999 with 2557-room-members-export in 54 minutes and 3 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Build Unit Test
passed #701478246
gitlab-org
package

00:06:40

passed #701478242
gitlab-org
test

00:11:56

passed #701478244
internal manual
test_e2e

00:05:37

passed #701478240
gitlab-org
validate

00:05:12

 
  Pre Deploy
passed #701478248
gitlab-org
distribute_beta_staging

00:00:37

 
  Deploy
passed #701478251
gitlab-org-docker
containerize

00:07:36

manual #701478253
internal allowed to fail manual
deploy_beta_staging
 
  Security
passed #701478260
gitlab-org
container_scanning

00:01:07

passed #701478256
gitlab-org
dast

00:06:32

passed #701478258
gitlab-org-docker
dependency_scanning

00:05:48

passed #701478255
gitlab-org-docker
sast

00:02:55

passed #701478262
gitlab-org-docker
secret_detection

00:28:15