Installer docs (#10552)

* Better formatting

* Tweak setup docs

* Add information on process control and logs

* Fix typo

* Change `cli` to `invoke`

* Update docs/docs/start/installer.md

Co-authored-by: Matthias Mair <code@mjmair.com>

* Update docs/docs/start/installer.md

Co-authored-by: Matthias Mair <code@mjmair.com>

* Remove available commands section from installer.md

Removed section on available commands for InvenTree services.

---------

Co-authored-by: Matthias Mair <code@mjmair.com>

docs/mkdocs.yml

@@ -132,9 +132,10 @@ nav:
     - Docker:
         - Introduction: start/docker.md
         - Installation: start/docker_install.md
+    - Installer:
+        - Installer: start/installer.md
     - Bare Metal:
         - Introduction: start/install.md
-        - Installer: start/installer.md
         - Production: start/bare_prod.md
         - Development: start/bare_dev.md
     - User Accounts: start/accounts.md