Further compression and png work.

src/core/streams/OutputBitStream.cpp

@@ -0,0 +1,28 @@
+#include "OutputBitStream.h"
+
+OutputBitStream::OutputBitStream(std::basic_ostream<char>* stream)
+    : BitStream(),
+      mStream(stream)
+{
+
+}
+
+bool OutputBitStream::isFinished() const
+{
+    return true;
+}
+
+std::vector<unsigned char> OutputBitStream::peekNextNBytes(unsigned n) const
+{
+    return {};
+}
+
+std::optional<unsigned char> OutputBitStream::readNextByte()
+{
+    return std::nullopt;
+}
+
+void OutputBitStream::writeByte(unsigned char data)
+{
+    (*mStream) << data;
+}