Previously, the zlib compressor was initialized once, lazily, then reused for each packet by resetting the stream. This didn't properly emit the zlib headers, so packet compression was broken and caused "java.util.zip.DataFormatException: incorrect header check" on the server. Since packets are only compressed above a threshold, this problem manifested itself only on larger servers, such as 1.10.2 FTB Beyond and Skyfactory 3, and 1.12.2 SevTech: Ages, which require sending a large ModList above the compression threshold enabled by the server. Change to instead recreate the zlib compressor, each time it is used as to capture the full header. For symmetry, the decompressor is also recreated each time.
* Removes self.compression_write and self.compression_read instance variables
* Remove self.compression_write, initialize with cursor
* Log compressing/decompressing packets in network debug mode
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