feat: Add initramfs generation #107

Job	Run time
build / image (main, aurora, 39)	4m 55s
build / image (main, aurora-dx, 39)	6m 1s
build / image (nvidia, aurora, 39)	6m 25s
build / image (nvidia, aurora-dx, 39)	6m 59s
build / image (asus, aurora, 39)	5m 20s
build / image (asus, aurora-dx, 39)	4m 56s
build / image (asus-nvidia, aurora, 39)	6m 14s
build / image (asus-nvidia, aurora-dx, 39)	7m 3s
build / image (framework, aurora, 39)	4m 59s
build / image (framework, aurora-dx, 39)	5m 48s
build / image (surface, aurora, 39)	6m 57s
build / image (surface, aurora-dx, 39)	5m 17s
build / image (surface-nvidia, aurora, 39)	7m 2s
build / image (surface-nvidia, aurora-dx, 39)	6m 57s
build / Check all ${{ inputs.brand_name }} ${{ inputs.fedora_version }} builds successful	1s
build / iso	1s
	1h 24m 55s

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