CryptoPkg: Add Null instance of the BaseCryptLib class

https://bugzilla.tianocore.org/show_bug.cgi?id=2257

Add a Null instance of the BaseCryptLib class.  This lib instance
can be used as a template for new implementations of the BaseCryptLib
class and can also be used to reduce CI build times for build
checks that depend on the BaseCryptLib class.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Xiaoyu Lu <xiaoyux.lu@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>

CryptoPkg/Library/BaseCryptLibNull/Pk/CryptTsNull.c

@@ -0,0 +1,42 @@
+/** @file
+  RFC3161 Timestamp Countersignature Verification Wrapper Implementation which does
+  not provide real capabilities.
+
+Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "InternalCryptLib.h"
+
+/**
+  Verifies the validity of a RFC3161 Timestamp CounterSignature embedded in PE/COFF Authenticode
+  signature.
+
+  Return FALSE to indicate this interface is not supported.
+
+  @param[in]  AuthData     Pointer to the Authenticode Signature retrieved from signed
+                           PE/COFF image to be verified.
+  @param[in]  DataSize     Size of the Authenticode Signature in bytes.
+  @param[in]  TsaCert      Pointer to a trusted/root TSA certificate encoded in DER, which
+                           is used for TSA certificate chain verification.
+  @param[in]  CertSize     Size of the trusted certificate in bytes.
+  @param[out] SigningTime  Return the time of timestamp generation time if the timestamp
+                           signature is valid.
+
+  @retval  FALSE  This interface is not supported.
+
+**/
+BOOLEAN
+EFIAPI
+ImageTimestampVerify (
+  IN  CONST UINT8  *AuthData,
+  IN  UINTN        DataSize,
+  IN  CONST UINT8  *TsaCert,
+  IN  UINTN        CertSize,
+  OUT EFI_TIME     *SigningTime
+  )
+{
+  ASSERT (FALSE);
+  return FALSE;
+}