[NFC] Reorgranize CI tasks into their own files #3134

Job	Run time
Build Examples	3m 31s
photon-build-all	5m 25s
photonclient-build	1m 16s
Photonlib - Build Docker - Athena	4m 43s
Photonlib - Build Docker - Raspbian	9m 25s
Photonlib - Build Host - Win64	7m 38s
photonserver-build-offline-docs	1m 0s
Photonlib - Build Docker - Aarch64	10m 3s
Photonlib - Build Host - Linux	5m 44s
Build fat JAR - Win64	3m 17s
Build fat JAR - macOS	2m 13s
Build fat JAR - Linux	2m 9s
Build fat JAR - macOSArm	2m 2s
Build fat JAR - LinuxArm32	2m 6s
Build fat JAR - LinuxArm64	1m 42s
Build image - ${{ matrix.image_url }}	0s
photon-release	0s
	1h 2m 14s

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