cmds: move nvme commands to cmds header

These function/helpers are nvme commands and are not Linux specific.

Signed-off-by: Daniel Wagner <[email protected]>

Author: igaw

libnvme/src/meson.build

@@ -7,6 +7,7 @@
 #
 sources = [
     'nvme/base64.c',
+    'nvme/cmds.c',
     'nvme/crc32.c',
     'nvme/fabrics.c',
     'nvme/filters.c',