New service for logging statistics of all jdbc queries

## Context 
We needed to log statistics of all jdbc queries.

## Description
- Creation of a service that logs statistics of all jdbc queries, with addition of the following parameters :
  * `AdministrationService.recordJdbcStatistics` to enable/disable the service
  * `AdministrationService.jdbcUsersFilter` to filter the application users for which statistics are computed
- Completion of the `.gitignore` file to filter log files