Added CDM support for Watermarking reporting.

[ Merge of http://go/wvgerrit/148552 ]

Extended the CDM layer to report OEMCrypto's watermarking support.
The reporting of watermarking comes in three (3) mechanisms:
1) ClientCapabilities in license requests
2) CryptoSession metrics when queried to OEMCrypto
3) String property query by apps

If OEMCrypto implementents OEMCrypto_GetWatermarkingSupport(), then
the reported watermarking support by the CDM will match that of
OEMCrypto.

If OEMCrypto does not implement OEMCrypto_GetWatermarkingSupport()
or an error occurs, it is assumed that OEMCrypto does not support
watermarking, and the CDM will report "Not Supported".

Bug: 226443788
Test: run_x86_64_tests request_license_test and license_unittest
Change-Id: Id929a356c395e6bcf45d371ee6887eec40d35329

libwvdrmengine/src_hidl/WVDrmFactory.cpp

@@ -216,6 +216,7 @@ void WVDrmFactory::printCdmProperties(FILE* out) {
       {"analog capabilities:", wvcdm::QUERY_KEY_ANALOG_OUTPUT_CAPABILITIES},
       {"can disable analog output:",
        wvcdm::QUERY_KEY_CAN_DISABLE_ANALOG_OUTPUT},
+      {"watermarking support:", wvcdm::QUERY_KEY_WATERMARKING_SUPPORT},
   };
 
   std::string value;