refactor: Update interface name from 'picontrol' to 'PiControl'

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.

src/revpi_middleware/cli_commands/cli_picontrol.py

@@ -38,7 +38,7 @@ def method_reset():
     log.debug("D-Bus call of method ResetDriver")
     simple_call(
         "ResetDriver",
-        interface=extend_interface("picontrol"),
+        interface=extend_interface("PiControl"),
         bus_type=BusType.SESSION if pi.pargs.use_session_bus else BusType.SYSTEM,
     )
     log.info("ResetDriver called via D-Bus")
@@ -48,7 +48,7 @@ def method_await_reset(timeout: int = 0):
     detected_signal = await_signal(
         "NotifyDriverReset",
         timeout,
-        extend_interface("picontrol"),
+        extend_interface("PiControl"),
         bus_type=BusType.SESSION if pi.pargs.use_session_bus else BusType.SYSTEM,
     )
     if detected_signal:

src/revpi_middleware/dbus_middleware1/process_image/interface_picontrol.py

@@ -15,7 +15,7 @@ log = getLogger(__name__)
 class InterfacePiControl(DbusInterface):
     """
     <node>
-        <interface name='com.revolutionpi.middleware1.picontrol'>
+        <interface name='com.revolutionpi.middleware1.PiControl'>
             <signal name="NotifyDriverReset">
             </signal>
             <method name='ResetDriver'>

tests/dbus_middleware1/process_image/test_interface_picontrol.py

@@ -18,7 +18,7 @@ class TestObjectPicontrol(TestBusProvider):
     def test_reset_driver(self):
         simple_call(
             "ResetDriver",
-            interface=extend_interface("picontrol"),
+            interface=extend_interface("PiControl"),
             bus_type=BusType.SESSION,
         )
         ioctl_call = IOCTL_QUEUE.get(timeout=2.0)
@@ -37,7 +37,7 @@ class TestObjectPicontrol(TestBusProvider):
         result = await_signal(
             "NotifyDriverReset",
             timeout,
-            extend_interface("picontrol"),
+            extend_interface("PiControl"),
             bus_type=BusType.SESSION,
         )
         self.assertTrue(result)