refactor(dbus): Parameterize picontrol_device and config_rsc

Replaced hardcoded paths with configurable parameters `picontrol_device`
and `config_rsc` across multiple classes. This improves flexibility,
making the components adaptable to various environments or setups.
Updated corresponding initialization and method implementations to use
these parameters.

src/revpi_middleware/dbus_middleware1/bus_provider.py

@@ -16,19 +16,26 @@ log = getLogger(__name__)
 
 class BusProvider(Thread):
 
-    def __init__(self):
+    def __init__(
+        self,
+        picontrol_device="/dev/piControl0",
+        config_rsc="/etc/revpi/config.rsc",
+    ):
         log.debug("enter BusProvider.__init__")
         super().__init__()
 
         self._bus = SystemBus()
         self._loop = GLib.MainLoop()
 
+        self.picontrol_device = picontrol_device
+        self.config_rsc = config_rsc
+
     def run(self):
         log.debug("enter BusProvider.run")
 
         self._bus.publish(
             REVPI_DBUS_NAME,
-            InterfacePiControl(),
+            InterfacePiControl(self.picontrol_device, self.config_rsc),
         )
 
         self._loop.run()