refactor(cli): D-Bus helpers support session and system bus types

Introduced `BusType` enum to differentiate between session and system
bus usage in D-Bus calls. Updated `simple_call` and `await_signal`
functions to include a `bus_type` parameter, improving flexibility.
Adjusted `cli_picontrol` to leverage the new `BusType` parameter for
D-Bus interactions.

src/revpi_middleware/cli_commands/cli_picontrol.py

@@ -4,7 +4,7 @@
 from argparse import ArgumentParser
 from logging import getLogger
 
-from .dbus_helper import await_signal, simple_call
+from .dbus_helper import BusType, await_signal, simple_call
 from .. import proginit as pi
 from ..dbus_middleware1 import extend_interface
 
@@ -36,12 +36,20 @@ def add_subparsers(parent_parser: ArgumentParser):
 
 def method_reset():
     log.debug("D-Bus call of method ResetDriver")
-    simple_call("ResetDriver", interface=extend_interface("picontrol"))
+    simple_call(
+        "ResetDriver",
+        interface=extend_interface("picontrol"),
+        bus_type=BusType.SESSION if pi.pargs.use_session_bus else BusType.SYSTEM,
+    )
     log.info("ResetDriver called via D-Bus")
 
 
 def method_await_reset(timout: int = 0):
-    detected_signal = await_signal("NotifyDriverReset", timout, extend_interface("picontrol"))
+    detected_signal = await_signal(
+        "NotifyDriverReset",
+        timout, extend_interface("picontrol"),
+        bus_type=BusType.SESSION if pi.pargs.use_session_bus else BusType.SYSTEM,
+    )
     if detected_signal:
         log.info("ResetDriver signal received")
     else: