Add psql role

That was actually really easy
Love the default ident mode

roles/postgresql/meta/main.yml

@@ -0,0 +1,2 @@
+---
+allow_duplicates: no

roles/postgresql/tasks/main.yml

@@ -0,0 +1,17 @@
+#!/usr/bin/ansible-playbook
+# vim:ft=ansible:
+---
+- name: Set up PostgreSQL
+  block:
+    - name: Install PostgreSQL
+      apt:
+        name:
+          - postgresql
+          - libpq-dev
+          - python3-psycopg2
+    - name: Start PostgreSQL
+      systemd:
+        name: postgresql
+        enabled: yes
+        state: started
+  become: yes