IrDecoder should expose the schema id and schema version

[aschw]

simple-binary-encoding/sbe-tool/src/main/cpp/otf/IrDecoder.h

Line 219 in 048e387

m_id = frame.irId();

m_id currently has no users. It should be exposed with a public getter.
frame.schemaVersion() should also be extracted in decodeIr() and made visible with a public method.