CryptoPkg: BaseCryptLib: Add unit tests (Host and Shell based)

This adds a new INF for BaseCryptLib suitable for
host based environments. It adds a host based unit test for
BaseCryptLib that can also be built as a shell based Unit Test.

In addition, this also adds a UnitTestHostCrtWrapper.c file, which provides
some of the functionality not provided by the default host based unit test
system that OpenSSL expects. This is used by UnitTestHostBaseCryptLib, a
version of the BaseCryptLib meant specifically for host based unit testing.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Xiaoyu Lu <xiaoyux.lu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Guomin Jiang <guomin.jiang@intel.com>
Signed-off-by: Matthew Carlson <matthewfcarlson@gmail.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

CryptoPkg/Test/UnitTest/Library/BaseCryptLib/TestEKUCerts/TestEKUParsingLeafSigner.ini

@@ -0,0 +1,25 @@
+[Version]
+Signature="$Windows NT$
+
+[EnhancedKeyUsageExtension]
+OID = 1.3.6.1.4.1.311.76.9.21.1
+
+[NewRequest]
+Subject = "CN=TestEKUParsingLeafSigner"
+Exportable = true
+KeyLength = 256
+HashAlgorithm = sha256
+KeyUsage = "CERT_DIGITAL_SIGNATURE_KEY_USAGE"
+KeyUsageProperty = "NCRYPT_ALLOW_SIGNING_FLAG"
+MachineKeySet = True
+RequestType = cert
+ValidityPeriodUnits = 20
+ValidityPeriod = Years
+ProviderName = "Microsoft Software Key Storage Provider"
+KeyAlgorithm = "ECDSA_P256"
+
+;
+; Surface test firwmare signing EKU
+;
+[Extensions]
+    _continue_ = "1.3.6.1.4.1.311.76.9.21.1"