Add database encoding parameter for Backend section #123
Description
Currently the AdminTools prints information about database engine and its version. While it misses important parameter encoding.
For instance, XWiki expects the database to use utf8 or utf8mb4 encoding with collation *_bin and it's highly recommended to use utf8mb4 (and utf8mb4_bin) which is the default since MySQL 8.
So, the updated version should be
Used database:
- Database engine: PostgreSQL
- Database version: 17.2
- Database encoding: UTF-8