Add libcamera - dummy (for now)

device/libcamera/device.cc

@@ -0,0 +1,40 @@
+#include "libcamera.hh"
+
+extern "C" {
+#include "device/device.h"
+#include <stdlib.h>
+};
+
+int libcamera_device_open(device_t *dev)
+{
+  dev->libcamera = new device_libcamera_t{};
+  return 0;
+}
+
+void libcamera_device_close(device_t *dev)
+{
+  if (dev->libcamera) {
+    delete dev->libcamera;
+    dev->libcamera = NULL;
+  }
+}
+
+int libcamera_device_set_decoder_start(device_t *dev, bool do_on)
+{
+  return -1;
+}
+
+int libcamera_device_video_force_key(device_t *dev)
+{
+  return -1;
+}
+
+int libcamera_device_set_fps(device_t *dev, int desired_fps)
+{
+  return -1;
+}
+
+int libcamera_device_set_option(device_t *dev, const char *key, const char *value)
+{
+  return -1;
+}