[NFC] Reorgranize CI tasks into their own files #3137

Job	Run time
photonclient-build	1m 9s
Build Examples	3m 31s
photon-build-all	5m 28s
Photonlib - Build Docker - Athena	4m 37s
Photonlib - Build Host - Win64	8m 15s
photonserver-build-offline-docs	1m 26s
Photonlib - Build Docker - Raspbian	8m 53s
Photonlib - Build Host - Linux	6m 32s
Photonlib - Build Docker - Aarch64	9m 58s
Build fat JAR - Win64	2m 42s
Build fat JAR - macOS	2m 26s
Build fat JAR - Linux	2m 29s
Build fat JAR - macOSArm	1m 48s
Build fat JAR - LinuxArm32	2m 10s
Build fat JAR - LinuxArm64	1m 43s
Build image - ${{ matrix.image_url }}	0s
photon-release	0s
	1h 3m 7s

Provide feedback