fix(args): make INTEGRITY_CHECK_BYTE_LEN public

In addition to being needed for future work, this is needed to make cargo doc pass.

Signed-off-by: Daniel Noland <daniel@githedgehog.com>

Author: daniel-noland

args/src/lib.rs

@@ -986,7 +986,7 @@ pub enum IntegrityCheckError {
 const SHA384_BYTE_LEN: usize = 384 / 8;
 
 /// Current size of integrity check in bytes (currently SHA-384).
-const INTEGRITY_CHECK_BYTE_LEN: usize = SHA384_BYTE_LEN;
+pub const INTEGRITY_CHECK_BYTE_LEN: usize = SHA384_BYTE_LEN;
 
 /// Internal representation of SHA-384 hash bytes.
 #[repr(transparent)]