v0.5.0

• [303405f] build(make): bump version to 0.5.0
• [160d111] build(docker): bump version to 0.5.0
• [03d9e8c] feat(model): handle surrogates and whitespace while decoding
• [23bf512] build(ci): add workflow for releasing bundled images
• [dacfde4] build(make): add target for building bundled images
• [88dbb91] docs(contrib): add contribution guide
• [87bf8bc] docs(conduct): add code of conduct
• [72e7b02] build(docker): shorten max event stream interval
• [23b8da3] feat(server): shorten max event stream interval
• [fec45fd] build(docker): hide welcome message from bitsandbytes