add download and sbom verification scripts #2969

Job	Run time
macOS (macOS, jdk8u, temurin)	1m 2s
Windows (windows-2022, jdk8u, temurin)	1s
Linux (linux, jdk8u, temurin, adoptopenjdk/centos7_build_image)	1s
macOS (macOS, jdk11u, temurin)	58s
Linux (linux, jdk11u, temurin, adoptopenjdk/centos7_build_image)	1s
Windows (windows-2022, jdk11u, temurin)	3s
Linux (linux, jdk17u, temurin, adoptopenjdk/centos7_build_image)	1s
Windows (windows-2022, jdk17u, temurin)	9s
Linux (linux, jdk, temurin, adoptopenjdk/centos7_build_image)	1s
Windows (windows-2022, jdk, temurin)	28s
Linux (alpine-linux, jdk8u, temurin, adoptopenjdk/alpine3_build_image)	1s
Linux (alpine-linux, jdk11u, temurin, adoptopenjdk/alpine3_build_image)	1s
Linux (alpine-linux, jdk17u, temurin, adoptopenjdk/alpine3_build_image)	1s
Linux (alpine-linux, jdk, temurin, adoptopenjdk/alpine3_build_image)	1s
Linux (linux, jdk11u, dragonwell, adoptopenjdk/centos7_build_image)	1s
Linux (linux, jdk11u, fast_startup, adoptopenjdk/centos7_build_image)	1s
Linux (linux, jdk11u, bisheng, adoptopenjdk/centos7_build_image)	1s
	2m 52s

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