Add mediaserver, rm .gitignore, FQCN, Jellyfin

- Added development "mediaserver" playbook for testing
- rm .gitignore in roles dir since no external ansible roles are used
- Update a part of the base role to use FQCN for linting
- Added "jellyfin" role to install Jellyfin with docker-compose
- Updated Traefik to use the loopback for default web entry points
- Simplified Traefik docker-compose vars, Ansible sets defaults

dev/mediaserver.yml

@@ -0,0 +1,11 @@
+- name: Install Media Server
+  hosts: all
+  become: true
+  vars_files:
+    - host_vars/mediaserver.yml
+  roles:
+    - base
+    - proxy
+    - docker
+    - traefik
+    - jellyfin