Add a check that will fail whenever there is a change in the list of
supported dive computers in libdivecomputer that is not reflected in the
`SupportedDivecomputers.*` lists.
Also add a script for a simplified update of these lists.
From a discussion with @dirkhh in https://github.com/subsurface/libdc/pull/71#issuecomment-2565384338.
Signed-off-by: Michael Keller <github@ike.ch>
