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

roles/base/tasks/ansible.yml

@@ -1,11 +1,11 @@
 - name: 'Install Ansible dependency: python3-apt'
-  shell: 'apt-get update && apt-get install python3-apt -y'
+  ansible.builtin.shell: 'apt-get update && apt-get install python3-apt -y'
   args:
     creates: /usr/lib/python3/dist-packages/apt
     warn: false
 
 - name: Install additional Ansible dependencies
-  apt:
+  ansible.builtin.apt:
     name: "{{ item }}"
     state: present
     force_apt_get: true
@@ -17,7 +17,7 @@
     - python3-psycopg2
 
 - name: Create Ansible's temporary remote directory
-  file:
+  ansible.builtin.file:
     path: "~/.ansible/tmp"
     state: directory
     mode: 0700