Add back RapidJSON dependency #34

Job	Run time
Build (2.3.2, ubuntu, 20.04, g++-9, gcc-9)	1m 40s
Build (2.3.2, ubuntu, 20.04, clang++-9, clang-9, clang-9)	1m 24s
Build (2.3.2, ubuntu, 22.04, g++-11, gcc-11)	1m 22s
Build (2.3.2, ubuntu, 22.04, clang++-11, clang-11, clang-11)	1m 43s
Build (2.3.2, macos, 11, g++, gcc, automake)	3m 49s
Build (2.3.2, macos, 11, clang++, clang, automake)	3m 33s
Build (2.3.2, macos, 12, g++, gcc, automake)	1m 38s
Build (2.3.2, macos, 12, clang++, clang, automake)	2m 15s
Build (2.3.3, ubuntu, 20.04, g++-9, gcc-9)	1m 23s
Build (2.3.3, ubuntu, 20.04, clang++-9, clang-9, clang-9)	1m 18s
Build (2.3.3, ubuntu, 22.04, g++-11, gcc-11)	1m 28s
Build (2.3.3, ubuntu, 22.04, clang++-11, clang-11, clang-11)	1m 48s
Build (2.3.3, macos, 11, g++, gcc, automake)	3m 14s
Build (2.3.3, macos, 11, clang++, clang, automake)	3m 47s
Build (2.3.3, macos, 12, g++, gcc, automake)	3m 29s
Build (2.3.3, macos, 12, clang++, clang, automake)	3m 19s
Build (2.3.4, ubuntu, 20.04, g++-9, gcc-9)	1m 24s
Build (2.3.4, ubuntu, 20.04, clang++-9, clang-9, clang-9)	1m 24s
Build (2.3.4, ubuntu, 22.04, g++-11, gcc-11)	1m 26s
Build (2.3.4, ubuntu, 22.04, clang++-11, clang-11, clang-11)	1m 33s
Build (2.3.4, macos, 11, g++, gcc, automake)	4m 54s
Build (2.3.4, macos, 11, clang++, clang, automake)	2m 11s
Build (2.3.4, macos, 12, g++, gcc, automake)	59s
Build (2.3.4, macos, 12, clang++, clang, automake)	1m 18s
	52m 19s

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