new camera handling concept

core/base.py

@@ -0,0 +1,18 @@
+from 
+
+
+class BaseImageSource(QObject):
+    frameReady = Signal(QPixmap)
+    errorOccurred = Signal(str)
+
+    def start(self): ...
+    def stop(self): ...
+
+
+class BaseControlSource(QObject):
+    errorOccurred = Signal(str)
+    parameterChanged = Signal(str, object)
+
+    def set_parameter(self, name: str, value): ...
+    def get_parameter(self, name: str): ...
+    def list_parameters(self) -> dict: ...