Renamed all occurrences of 'picontrol' to 'PiControl' in the D-Bus
interface definitions, method calls, and test cases for consistency and
adherence to naming conventions. This ensures uniformity across the
codebase and resolves potential naming-related issues.
Introduce `FakeResetDriverWatchdog` to simulate driver reset triggers.
Update existing tests and add a new test, `test_notify_reset_driver`, to
verify reset notifications using the event signaling mechanism.
Introduces initial tests for the PiControl interface in
`dbus_middleware1`. These tests cover basic functionality like checking
activity status and resetting the driver while verifying IOCTL calls.
Introduces test infrastructure and mockup classes for
`dbus_middleware1`. Includes `BusProvider` test setup, fake device
implementations, and initialization logic to support session bus
testing. Enhances testability and isolation of the D-Bus middleware
components.
