Make the encoding utils public.

src/main/jwt_full/private/crypto/hmac.nim

@@ -2,11 +2,10 @@ import std/logging
 
 import bearssl
 
+import ../../encoding
 import ../../jwa
 import ../../jwk
 
-import ../encoding
-
 proc bearHMAC(message: string, alg: JwtAlgorithm, key: string): string =
 
   var vtable: ptr HashClass