Add ingest/processed/bytes metric #13720

Job	Run time
Set env var	1s
build (jdk11)	10m 40s
build (jdk17)	10m 14s
build (jdk21.0.4)	10m 7s
unit tests (jdk17) / changes	2s
unit tests (jdk17) / other_modules_test / other modules test	59m 28s
unit tests (jdk17) / indexing_modules_test / indexing modules test	38m 30s
unit tests (jdk17) / processing_modules_test / processing modules test	45m 34s
unit tests (jdk17) / server_modules_test / server modules test	8m 23s
unit tests (jdk${{ matrix.jdk }})	0s
revised-its	0s
standard-its	0s
	3h 2m 59s

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