Added all the base files and tasks

files/module-mariadb.xml

handlers/main.yml

tasks/install-configuration.yml

tasks/install-database.yml

tasks/install-dependencies.yml

tasks/install-reverse-proxy.yml

tasks/install-run-service.yml

tasks/install-service.yml

tasks/install-ssl.yml

tasks/install-update.yml

tasks/main.yml

templates/keycloak.service.j2

templates/standalone-ha.xml.j2

vars/main.yml