guides: add new generator #20243

Job	Run time
setup	58s
notification	8s
specs	1m 11s
scripts	48s
client javascript@22.9.0	8m 7s
client csharp@8.0.401	4m 54s
client dart@3.5.2	3m 47s
client go@1.23.1	3m 1s
client java@8	3m 27s
client java@11	3m 24s
client java@21	3m 40s
client java@17	3m 36s
client kotlin@17.0.12	5m 31s
client php@8.3	3m 51s
client python@3.8	3m 34s
client python@3.9	3m 37s
client python@3.10	3m 41s
client python@3.11	3m 48s
client python@3.12	3m 58s
client ruby@3.3.5	2m 55s
client scala@17.0.12	7m 5s
client swift@5.9	7m 2s
client swift${{ (((needs.setup.outputs.RUN_MACOS_SWIFT_CTS == 'true') && format('@{0}', fromJSON(needs.setup.outputs.SWIFT_DATA).version)) \|\| '') }} macos	1s
client kotlin${{ (((needs.setup.outputs.RUN_MACOS_KOTLIN_BUILD == 'true') && format('@{0}', fromJSON(needs.setup.outputs.KOTLIN_DATA).version)) \|\| '') }} macos	1s
codegen	1s
check_green	1s
push_and_release	1s
	1h 22m 8s

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