[NFC] Reorgranize CI tasks into their own files #3133

Job	Run time
Build Examples	3m 58s
photonclient-build	1m 7s
Photonlib - Build Docker - Athena	4m 49s
photon-build-all	5m 10s
Photonlib - Build Docker - Raspbian	9m 14s
Photonlib - Build Host - Win64	8m 46s
Photonlib - Build Docker - Aarch64	9m 46s
photonserver-build-offline-docs	1m 30s
Photonlib - Build Host - Linux	6m 31s
Build fat JAR - Win64	2m 43s
Build fat JAR - macOS	2m 5s
Build fat JAR - Linux	1m 50s
Build fat JAR - macOSArm	2m 19s
Build fat JAR - LinuxArm32	2m 9s
Build fat JAR - LinuxArm64	2m 57s
Build image - ${{ matrix.image_url }}	0s
photon-release	0s
	1h 4m 54s

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