feat(ansible): add hold_slayer database variables and deployment

- Add hold_slayer_db_* variables to portia host_vars
- Update postgresql deploy.yml to create user, database,
  and enable extensions for hold_slayer

ansible/postgresql/deploy.yml

@@ -204,6 +204,7 @@
       - { user: "{{ periplus_db_user }}", password: "{{ periplus_db_password }}" }
       - { user: "{{ daedalus_db_user }}", password: "{{ daedalus_db_password }}" }
       - { user: "{{ mnemosyne_db_user }}", password: "{{ mnemosyne_db_password }}" }
+      - { user: "{{ hold_slayer_db_user }}", password: "{{ hold_slayer_db_password }}" }
     no_log: true
 
   - name: Create application databases with owners
@@ -228,6 +229,7 @@
       - { name: "{{ periplus_db_name }}", owner: "{{ periplus_db_user }}" }
       - { name: "{{ daedalus_db_name }}", owner: "{{ daedalus_db_user }}" }
       - { name: "{{ mnemosyne_db_name }}", owner: "{{ mnemosyne_db_user }}" }
+      - { name: "{{ hold_slayer_db_name }}", owner: "{{ hold_slayer_db_user }}" }
 
   - name: Enable postgis and pg_trgm extensions in periplus database
     community.postgresql.postgresql_ext:
@@ -256,6 +258,7 @@
       - "{{ spelunker_db_name }}"
       - "{{ anythingllm_db_name }}"
       - "{{ daedalus_db_name }}"
+      - "{{ hold_slayer_db_name }}"
 
   handlers:
   - name: restart postgresql