1.0.0: Module release

Complete AWS Backup module (#1)

* Add initial module configuration

* Add first working example

* Update pre-commit-config

* Changes based on feedback + added outputs + simplified auroradb configuration

* Added multiple DBs as another example - Aurora PostgreSQL + Aurora MySQL

* Changes based on feedback

1. Added iam_role_name variable

2. Adjusted output variables to consider when a vault is not created

3. Adjusting README example

* Add example for deploying vault separately to module

* Changes based on feedback

1. Added missing example into README
2. Variable descriptions adjusted
3. Changed the way backup_options works

Co-authored-by: marcincuber <marcincuber@hotmail.com>