Add monica deployment

Added basic monica docker deployment.

A key which is required for monica is automatically generated on
deployment.
Optionally, geolocation and weather api can be enabled.
Mail-sending functionality is disabled by default but can be enabled
with any compatible smtp server set up.

roles/monica/tasks/Ubuntu.yml

@@ -0,0 +1,12 @@
+---
+## install requisites
+- name: Ensure openssl installed
+  ansible.builtin.package:
+    name: "openssl"
+    state: present
+  become: yes
+  tags:
+    - apt
+    - download
+    - packages
+