Dilithium: C code optimized

Changes to get best out of 32-bit ARM chips.
Fixes come compile errors when cutting out functions.
WOLFSSL_DILITHIUM_SIGN_CHECK_Y and WOLFSSL_DILITHIUM_SIGN_CHECK_W0 added
to speed up signing. No longer specification conformat when either used.

Author: SparkiDev

tests/api.c

@@ -27554,12 +27554,12 @@ static int test_wc_dilithium(void)
     !defined(WOLFSSL_DILITHIUM_NO_SIGN)
     WC_RNG rng;
 #endif
-#ifndef WOLFSSL_DILITHIUM_NO_SIGN
     byte* privKey = NULL;
+#ifndef WOLFSSL_DILITHIUM_NO_SIGN
     word32 privKeyLen = DILITHIUM_MAX_KEY_SIZE;
 #endif
-#ifndef WOLFSSL_DILITHIUM_NO_VERIFY
     byte* pubKey = NULL;
+#ifndef WOLFSSL_DILITHIUM_NO_VERIFY
     word32 pubKeyLen = DILITHIUM_MAX_PUB_KEY_SIZE;
 #endif