test: add test for parallel stream transmission

[eareimu]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 85.48009% with 62 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
qconnection/src/space/data.rs	5.55%	17 Missing ⚠️
qcongestion/src/congestion.rs	60.00%	10 Missing ⚠️
qrecovery/src/recv/recver.rs	60.00%	8 Missing ⚠️
qconnection/src/space/handshake.rs	14.28%	6 Missing ⚠️
qconnection/src/space/initial.rs	33.33%	6 Missing ⚠️
qrecovery/src/send/sender.rs	54.54%	5 Missing ⚠️
qrecovery/src/send/outgoing.rs	80.95%	4 Missing ⚠️
gm-quic/src/client.rs	33.33%	2 Missing ⚠️
qconnection/src/builder.rs	50.00%	1 Missing ⚠️
qconnection/src/lib.rs	66.66%	1 Missing ⚠️
... and 2 more

Files with missing lines	Coverage Δ
gm-quic/src/lib.rs	100.00% <ø> (ø)
gm-quic/src/tests.rs	100.00% <100.00%> (ø)
qbase/src/cid.rs	100.00% <ø> (ø)
qbase/src/cid/local_cid.rs	87.95% <ø> (ø)
qbase/src/frame.rs	74.14% <ø> (ø)
qbase/src/frame/stream.rs	96.66% <100.00%> (+1.50%)	⬆️
qbase/src/handshake.rs	90.44% <100.00%> (ø)
qbase/src/sid/remote_sid.rs	76.51% <100.00%> (ø)
qbase/src/varint.rs	89.58% <100.00%> (ø)
qconnection/src/path/burst.rs	79.43% <ø> (+0.93%)	⬆️
... and 24 more

... and 6 files with indirect coverage changes

[huster-zhangpeng]

ok