Feat: memory-efficient geodata decoder #319
Merged
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This PR implements a simple decoder based on LEB128 used in protobuf. It reads geo files byte by byte to reduce peak memory usage.
If the decoder fails to decode the geo file, it will fallback to the original ReadFile method to keep backward compatibility.
About protobuf encoding and decoding, read https://developers.google.com/protocol-buffers/docs/encoding