feat(database): add sloth database initialization script

Adds the creation of the sloth database to the Postgres initialization 
script to ensure that it is available for use in the application.

kind/postgres.yaml

@@ -31,6 +31,7 @@ data:
     	CREATE DATABASE time WITH OWNER postgres ENCODING utf8;
     	CREATE DATABASE dancefinder WITH OWNER postgres ENCODING utf8;
     	CREATE DATABASE hifi WITH OWNER postgres ENCODING utf8;
+    	CREATE DATABASE sloth WITH OWNER postgres ENCODING utf8;
     EOSQL
 ---
 apiVersion: apps/v1