feat(storage): add storage support to application resource #849

Job	Run time
Build	1m 34s
Integration (1.6.*, 5.19/stable, lxd, 5.19, 2.9)	29m 8s
Integration (1.6.*, 5.19/stable, lxd, 5.19, 3)	35m 43s
Integration (1.6.*, 5.19/stable, microk8s, 1.28, 2.9)	8m 54s
Integration (1.6.*, 5.19/stable, microk8s, 1.28-strict, 3)	9m 8s
Integration (1.7.*, 5.19/stable, lxd, 5.19, 2.9)	31m 37s
Integration (1.7.*, 5.19/stable, lxd, 5.19, 3)	21m 46s
Integration (1.7.*, 5.19/stable, microk8s, 1.28, 2.9)	9m 51s
Integration (1.7.*, 5.19/stable, microk8s, 1.28-strict, 3)	9m 17s
Integration (1.8.*, 5.19/stable, lxd, 5.19, 2.9)	30m 10s
Integration (1.8.*, 5.19/stable, lxd, 5.19, 3)	28m 50s
Integration (1.8.*, 5.19/stable, microk8s, 1.28, 2.9)	8m 34s
Integration (1.8.*, 5.19/stable, microk8s, 1.28-strict, 3)	9m 48s
	3h 54m 20s

Provide feedback