feat: update the CameraRoiWidget to handle multiple cameras (pymmcore…

…-plus#292)

* feat: update logic

* fix: setROI

* fix: _update_camera_info

* fix: ser roi

* fix: _get_loaded_cameras + snap_checkbox

* fix: update logic for multi_cam

* test: update tests

* fix: reoreder methods

* fix: remove unused

* create wdg within main class

* fix: comment

* fix: comment

* test: fix

* test: fix

* fix: revert

* add second camera to camera widget

---------

Co-authored-by: Talley Lambert <[email protected]>

examples/camera_roi_widget.py

@@ -8,7 +8,11 @@
 mmc = CMMCorePlus().instance()
 mmc.loadSystemConfiguration()
 
+# this widget supports multiple camera devices
+mmc.loadDevice("Camera2", "DemoCamera", "DCam")
+mmc.initializeDevice("Camera2")
+
 cam_roi_wdg = CameraRoiWidget()
 cam_roi_wdg.show()
 
-app.exec_()
+app.exec()