Added CDM support for production readiness reporting.

[ Merge of http://go/wvgerrit/151518 ]

Extended the CDM layer to report OEMCrypto's production readiness
via string property query.

If OEMCrypto implementents OEMCrypto_ProductionReady(), then the
reported readiness by the CDM will report "True" or "False".

If OEMCrypto does not implement OEMCrypto_ProductionReady() then no
level of readiness is assumed, and the CDM will report "Unknown".

Bug: 231655151
Test: run_prov30_tests and request_license_test
Change-Id: I6afe481ef00ac129d02b004eca89a65810bfbff8

libwvdrmengine/cdm/core/include/crypto_session.h

@@ -221,6 +221,11 @@ class CryptoSession {
       RequestedSecurityLevel requested_security_level,
       CdmWatermarkingSupport* support);
 
+  virtual bool GetProductionReadiness(CdmProductionReadiness* readiness);
+  virtual bool GetProductionReadiness(
+      RequestedSecurityLevel requested_security_level,
+      CdmProductionReadiness* readiness);
+
   virtual bool GetMaximumUsageTableEntries(
       RequestedSecurityLevel security_level, size_t* number_of_entries);