numpy: bump to version 2.2.1

numpy: bump to version 2.2.1

Dropped:
  003-without-vendored-meson.patch
  004-workaround-for-multiple-top-level-packages-discovered.patch

This time, we really need to use meson to build numpy.
And to make things more complicated, the 'vendored' meson package (that
comes with numpy) must be used. This is because they have some special
logic in there that's specific to numpy.

With this change, we also need to keep a special/internal
'openwrt-cross.txt.in' file, because cross-compiling numpy also requires
that a 'longdouble_format' property be added.
More details about this:
   https://github.com/numpy/numpy/issues/23972
   https://github.com/numpy/numpy/blob/maintenance/2.2.x/doc/source/building/cross_compilation.rst

Removing quirk fix for x86_64 with detecting 'avx512f'.
This should work with the new meson stuff.

And finally, added a test.sh script.
This should make sure that this package works fine during upgrades.

Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>