Bash script for creating multiple stream writers (#13271)

Add another bash script to the contrib directory. It creates multiple stream writers and also prints out the example configuration for homeserver.yaml.

Signed-off-by: Ville Petteri Huh.

contrib/workers-bash-scripts/create-multiple-workers.md

@@ -1,31 +0,0 @@
-# Creating multiple workers with a bash script
-
-Setting up multiple worker configuration files manually can be time-consuming.
-You can alternatively create multiple worker configuration files with a simple `bash` script. For example:
-
-```sh
-#!/bin/bash
-for i in {1..5}
-do
-cat << EOF >> generic_worker$i.yaml
-worker_app: synapse.app.generic_worker
-worker_name: generic_worker$i
-
-# The replication listener on the main synapse process.
-worker_replication_host: 127.0.0.1
-worker_replication_http_port: 9093
-
-worker_listeners:
-  - type: http
-    port: 808$i
-    resources:
-      - names: [client, federation]
-
-worker_log_config: /etc/matrix-synapse/generic-worker-log.yaml
-EOF
-done
-```
-
-This would create five generic workers with a unique `worker_name` field in each file and listening on ports 8081-8085.
-
-Customise the script to your needs.