This commit introduces the `InitialCreate` migration class, establishing the initial database schema with multiple tables including `TBDD_CLIENT_USER`, `TBDD_GROUPS`, `TBDD_MODULES`, and `TBDD_USER`. Foreign key relationships are defined to ensure referential integrity, and a `Down` method is included for rollback functionality.
Additionally, the `InitialCreate.Designer.cs` file is generated to capture the model snapshot post-migration, while the `EGDbContextModelSnapshot.cs` file is updated to reflect the current state of the database model for future migrations.
