camera: Fix unimplemented module imports

src/components/camera/mod.rs

@@ -38,6 +38,8 @@ pub trait CameraExt {
 /// The fallback `Camera` API, to use on platforms where it is unimplemented.
 #[cfg(not(target_os = "linux"))]
 mod unimplemented {
+    use super::*;
+
     #[derive(Debug)]
     pub(crate) struct UnimplementedCamera;