Double-buffering for JSON async stream (#1571) #1760

Job	Run time
PSV.Linux.20.04.gcc7.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 3s
PSV.Linux.20.04.gcc7.Cpplint	8m 3s
PSV.Linux.22.04.gcc11	8m 6s
PSV.Linux.22.04.gcc9.Tests.CodeCov	10m 34s
PSV.Linux.Android.20.04	5m 30s
PSV.Linux.20.04.clang	7m 49s
PSV.Linux.22.04.gcc11.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 11s
PSV.Linux.22.04.gcc13	8m 24s
PSV.Linux.22.04.gcc13.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 33s
PSV.MacOS13.Xcode15.x86_64	3m 48s
PSV.Commit.Checker	0s
PSV.iOS.MacOS14.Xcode15	8m 56s
PSV.iOS.MacOS13.Xcode16	5m 35s
PSV.iOS.MacOS13.Xcode14	10m 44s
PSV.iOS.MacOS13.Xcode15	13m 43s
PSV.MacOS13.Xcode15	1m 42s
PSV.MacOS14.Xcode15	4m 1s
PSV.MacOS13.Xcode16	3m 20s
PSV.Win.VC2019	9m 6s
	1h 56m 8s

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