Add new cache management instruction support to drmemtrace

My pending comment in https://github.com/DynamoRIO/dynamorio/pull/7109 which adds CLFLUSHOPT opcode decoding support:

drmemtrace needs to be udpated as well: it looks like CLFLUSHOPT also invalidates all cache levels and so should be treated like CLFLUSH in memtraces (or would a simulator want to know about the subtle differences?). So just adding to 2 spots in instru.cpp https://github.com/DynamoRIO/dynamorio/blob/master/clients/drcachesim/tracer/instru.cpp#L227 and https://github.com/DynamoRIO/dynamorio/blob/master/clients/drcachesim/tracer/instru.cpp#L244 should be enough (optionally extend invariant_checker_test). Hmm. Maybe enough questions this should be separated out.