fix(io): Add argument names to D-Bus methods for input/output paths

Updated `GetAllInputs` and `GetAllOutputs` methods in the D-Bus
interface to include explicit argument names (`object-path-list`) and
adjusted their types to `ao` not strings.

Signed-off-by: Sven Sager <s.sager@kunbus.com>

src/revpi_middleware/ios1/interface_ios.py

@@ -16,10 +16,10 @@ class InterfaceIoManager:
     <node>
         <interface name="com.revolutionpi.ios1.IoManager">
             <method name="GetAllInputs">
-                <arg type="as" direction="out"/>
+                <arg name="object-path-list" type="ao" direction="out"/>
             </method>
             <method name="GetAllOutputs">
-                <arg type="as" direction="out"/>
+                <arg name="object-path-list" type="ao" direction="out"/>
             </method>
             <method name="Get">
                 <arg name="io_name" type="s" direction="in"/>