feat: refactor BodyReader handling in HttpClient implementations #3045

Job	Run time
Host Build without MbedTLS	7m 35s
Host Build & Test (macos-latest)	9m 22s
Host Build & Test (clang-msvc)	7m 20s
Embedded Build Without Host Install	2m 21s
Host Build & Test (amp-devcontainer-cpp)	2m 9s
Host Build & Test (ubuntu-latest)	9m 5s
Host Build & Test (windows-latest)	9m 14s
Host Build & Test (windows-2019)	8m 43s
Embedded Build - RTOS (FreeRTOS)	58s
Embedded Build (7-2018-q2, RelWithDebInfo)	1m 4s
Embedded Build - RTOS (ThreadX)	1m 59s
Embedded Build (8-2019-q3, RelWithDebInfo)	1m 18s
Embedded Build (9-2020-q2, RelWithDebInfo)	1m 5s
Embedded Build (10.3-2021.10, RelWithDebInfo)	1m 1s
	1h 3m 14s

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