crypto: implement md5, which now used by sprof

libraries/libvapours/include/vapours/crypto.hpp

@@ -19,6 +19,7 @@
 
 #include <vapours/crypto/crypto_memory_compare.hpp>
 #include <vapours/crypto/crypto_memory_clear.hpp>
+#include <vapours/crypto/crypto_md5_generator.hpp>
 #include <vapours/crypto/crypto_sha1_generator.hpp>
 #include <vapours/crypto/crypto_sha256_generator.hpp>
 #include <vapours/crypto/crypto_aes_encryptor.hpp>