libcamera: controls: Use vendor tags for draft controls and properties

Label draft controls and properties through the "draft" vendor tag
and deprecate the existing "draft: true" mechanism. This uses the new
vendor tags mechanism to place draft controls in the same
libcamera::controls::draft namespace and provide a defined control id
range for these controls. This requires moving all draft controls from
control_ids.yaml to control_ids_draft.yaml.

One breaking change in this commit is that draft control ids also move
to the libcamera::controls::draft namespace from the existing
libcamera::controls namespace. This is desirable to avoid API breakages
when adding new libcamera controls. So, for example, the use of
controls::NOISE_REDUCTION_MODE will need to be replaced with
controls::draft::NOISE_REDUCTION_MODE.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/libcamera/control_ids.cpp.in

@@ -24,15 +24,6 @@ namespace controls {
 
 ${controls_doc}
 
-/**
- * \brief Namespace for libcamera draft controls
- */
-namespace draft {
-
-${draft_controls_doc}
-
-} /* namespace draft */
-
 ${vendor_controls_doc}
 
 #ifndef __DOXYGEN__
@@ -42,12 +33,6 @@ ${vendor_controls_doc}
  */
 ${controls_def}
 
-namespace draft {
-
-${draft_controls_def}
-
-} /* namespace draft */
-
 ${vendor_controls_def}
 
 #endif