doc: describe remote worker setup.

Signed-off-by: Milosz Wasilewski <milosz.wasilewski@linaro.org>
15 jobs for RTD_remote_workers in 17 minutes and 12 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Test
passed #94101
amd64
dispatcher-debian-10

00:02:24

passed #94103
amd64
dispatcher-debian-11

00:02:35

passed #94102
amd64
server-debian-10

00:02:56

passed #94104
amd64
server-debian-11

00:05:26

 
  Analyze
passed #94106
amd64
black

00:00:45

passed #94107
amd64
code_quality

00:00:25

passed #94108
amd64
coverage

00:06:44

59.3%
passed #94109
amd64
dockerfiles

00:00:22

passed #94111
amd64
pylint

00:02:59

passed #94105
amd64-dind
sast

00:02:22

passed #94110
amd64
schemas

00:00:36

 
  Build
passed #94113
amd64
debian/10

00:01:37

passed #94112
amd64
doc

00:00:50

passed #94114
amd64-dind
docker-amd64-dispatcher

00:04:33

passed #94115
amd64-dind
docker-amd64-server

00:04:58