cipher:dilithium: Have cipher/dilithium.h.
* cipher/dilithium.h: New. * cipher/dilithium-common.c: Add static qualifier to functions. * cipher/dilithium-dep.c: Move function delclarations from dilithium.c and add undef-s. * cipher/dilithium.c: Support use of DILITHIUM_MODE.
- GnuPG-bug-id: T7640
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>