json_parser incremental parsing #3188

Job	Run time
ci_test_compilers_clang (3.8)	15m 33s
ci_test_compilers_clang (3.9)	16m 23s
ci_test_compilers_clang2 (13)	11m 31s
ci_test_compilers_clang (4)	14m 43s
ci_test_compilers_gcc (8)	1s
ci_test_compilers_clang (5)	14m 57s
ci_test_compilers_clang2 (15-bullseye)	11m 36s
ci_test_compilers_gcc2 (12)	20s
ci_test_compilers_clang (6)	15m 30s
ci_test_compilers_gcc (9)	1s
ci_test_compilers_gcc2 (latest)	1s
ci_test_compilers_clang (7)	17m 7s
ci_test_compilers_gcc (10)	27s
clang_14_build	38m 24s
ci_test_compilers_clang (8)	17m 1s
ci_test_compilers_gcc (11)	1s
ci_test_compilers_clang (9)	18m 52s
gcc_build	14s
ci_test_compilers_gcc (12)	1s
ci_test_compilers_clang (10)	19m 39s
gcc_build_no_deprecated	18s
ci_test_compilers_gcc (latest)	1s
ci_test_compilers_clang (11)	20m 38s
ci_test_compilers_clang (12)	20m 27s
gcc_build11b	50s
gcc_build12	15s
ci_test_compilers_clang (13)	18m 32s
github_20 (g++-12, Debug)	23s
ci_test_compilers_clang (14)	18m 34s
github_20 (g++-12, Release)	17s
ci_test_compilers_clang (15-bullseye)	17m 28s
	5h 10m 5s

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