Add option for splitting generated Java parser into 3 files #1197

Job	Run time
cpp-lib-build (macos-15, clang, ON)	1m 3s
build (macos-15, tool)	1m 19s
cpp-lib-build (macos-15, clang, OFF)	40s
build (macos-15, cpp)	8m 3s
cpp-lib-build (macos-15, gcc, ON)	38s
build (macos-15, csharp)	3m 41s
cpp-lib-build (macos-15, gcc, OFF)	43s
build (macos-15, dart)	5m 51s
build (macos-15, go)	1m 52s
cpp-lib-build (ubuntu-20.04, clang, ON)	1m 3s
build (macos-15, java)	1m 14s
cpp-lib-build (ubuntu-20.04, clang, OFF)	1m 5s
build (macos-15, javascript)	1m 9s
cpp-lib-build (ubuntu-20.04, gcc, ON)	32s
build (macos-15, typescript)	7m 57s
cpp-lib-build (ubuntu-20.04, gcc, OFF)	45s
build (macos-15, php)	2m 10s
cpp-lib-build (windows-2022, clang, ON)	3m 16s
cpp-lib-build (windows-2022, clang, OFF)	5m 21s
cpp-lib-build (windows-2022, cl)	4m 14s
build (macos-15, python3)	1m 15s
build (ubuntu-20.04, tool)	1m 1s
build (ubuntu-20.04, cpp)	1h 10m 29s
build (ubuntu-20.04, csharp)	1h 2m 59s
build (ubuntu-20.04, dart)	51m 40s
build (ubuntu-20.04, go)	2m 31s
build (ubuntu-20.04, java)	1m 7s
build (ubuntu-20.04, javascript)	1m 32s
build (ubuntu-20.04, typescript)	10m 6s
build (ubuntu-20.04, php)	1m 10s
build (ubuntu-20.04, python3)	1m 5s
build (windows-2022, tool)	1m 38s
build (windows-2022, cpp)	23m 42s
build (windows-2022, csharp)	8m 46s
build (windows-2022, dart)	4m 15s
build (windows-2022, go)	8m 9s
build (windows-2022, java)	2m 1s
build (windows-2022, javascript)	2m 12s
build (windows-2022, typescript)	20m 52s
build (windows-2022, php)	2m 19s
build (windows-2022, python3)	1m 45s
	5h 33m 10s

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