Use protobufs for packed message data #315

Job	Run time
PhotonClient Build	38s
Build Examples	3m 54s
Gradle Build	4m 38s
Photonlib - Build Docker - Athena	6m 52s
Photonlib - Build Docker - Raspbian	7m 4s
Photonlib - Build Host - Win64	7m 10s
Build Offline Docs	1m 14s
Photonlib - Build Docker - Aarch64	6m 42s
Photonlib - Build Host - macOS	6m 4s
Photonlib - Build Host - Linux	4m 32s
Build fat JAR - Win64	3m 8s
Build fat JAR - macOS	5m 6s
Build fat JAR - Linux	2m 22s
Build fat JAR - macOSArm	2m 20s
Build fat JAR - LinuxArm32	1m 34s
Build fat JAR - LinuxArm64	1m 30s
Build image - ${{ matrix.image_url }}	0s
release	0s
	1h 4m 48s

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