- control: add `device_option_is_equal`
- libcamera: provide human readable configurable options
- v4l2: include camera control values
- libcamera: store all applied controls
- libcamera: use `device_option_is_equal`
This adds `buffer_list_alloc_buffers` and `buffer_list_free_buffers`
to delay buffers allocation for `libcamera`.
Doing this allows to setup RAW stream afterwards.
