feat: Expose non-io_buf API for fb_parser (#4683) #5885

Job	Run time
manylinux.amd64.py3.6.build	4m 40s
ubuntu-latest.amd64.py3.8.sdist-bundle	46s
manylinux.aarch64.py3.7.build	43m 45s
manylinux.amd64.py3.7.build	4m 17s
manylinux.amd64.py3.8.build	4m 12s
manylinux.aarch64.py3.8.build	41m 23s
macos.amd64.py3.6.build	11m 20s
manylinux.amd64.py3.9.build	4m 13s
windows-2019.amd64.py3.6.build	13m 24s
manylinux.aarch64.py3.9.build	42m 11s
macos.amd64.py3.7.build	11m 4s
manylinux.aarch64.py3.10.build	42m 9s
windows-2019.amd64.py3.7.build	15m 29s
macos.amd64.py3.8.build	10m 23s
manylinux.amd64.py3.10.build	4m 10s
macos.amd64.py3.9.build	10m 23s
macos.amd64.py3.10.build	12m 24s
windows-2019.amd64.py3.8.build	15m 38s
windows-2019.amd64.py3.9.build	16m 36s
windows-2019.amd64.py3.10.build	16m 24s
ubuntu-latest.amd64.py3.8.sdist-build-test	5m 11s
manylinux.amd64.py3.6.test	3m 25s
manylinux.amd64.py3.7.test	3m 25s
manylinux.amd64.py3.8.test	3m 5s
manylinux.amd64.py3.9.test	2m 46s
manylinux.amd64.py3.10.test	2m 34s
macos.amd64.py3.6.test	5m 44s
macos.amd64.py3.7.test	5m 7s
macos.amd64.py3.8.test	12m 34s
macos.amd64.py3.9.test	12m 12s
macos.amd64.py3.10.test	13m 5s
windows-2019.amd64.py3.6.test	8m 16s
windows-2019.amd64.py3.7.test	7m 7s
windows-2019.amd64.py3.8.test	6m 37s
windows-2019.amd64.py3.9.test	6m 45s
windows-2019.amd64.py3.10.test	7m 6s
manylinux.aarch64.py3.7.test	13m 0s
manylinux.aarch64.py3.8.test	14m 27s
manylinux.aarch64.py3.9.test	14m 5s
manylinux.aarch64.py3.10.test	14m 12s
	8h 5m 34s

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