Restore BodyPartReader.decode() as sync method, add decode_async() fo… #2240

Job	Run time
Generate llhttp sources	6s
Linter	1m 2s
Benchmark	6m 30s
Test (3.10, macos, false)	7m 25s
Test (3.11, Y, ubuntu, false)	5m 9s
Test (3.11, macos, false)	6m 42s
Test (3.10, Y, ubuntu, false)	5m 29s
Test (3.13, Y, ubuntu, false)	5m 17s
Test (3.12, windows, false)	5m 10s
Test (3.12, ubuntu, false)	4m 13s
Test (3.14, ubuntu, false)	4m 31s
Test (3.12, macos, false)	5m 49s
Test (3.13, windows, false)	5m 45s
Test (3.11, ubuntu, false)	3m 59s
Test (3.12, Y, ubuntu, false)	5m 39s
Test (3.14, macos, false)	7m 24s
Test (3.13, ubuntu, false)	4m 1s
Test (3.10, ubuntu, false)	4m 12s
Test (3.13, macos, false)	5m 45s
Test (3.14, windows, false)	5m 53s
Test (pypy-3.11, Y, ubuntu, false)	9m 24s
Test (3.11, windows, false)	5m 16s
Test (3.10, windows, false)	6m 12s
Test (3.14, Y, ubuntu, false)	5m 35s
Test (ubuntu, 3.14t, false)	3m 44s
check	5s
Pre-Deploy	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }} ${{ matrix.musl }}	0s
Tarball	0s
Deploy	0s
	2h 10m 17s

Provide feedback