Move total-storage-available-breakdown-card to its own component

What does this MR do and why?

MR description	MR Link
Update storage statistics card for namespaces under project limits	!127746 (merged)
Move total-storage-available-breakdown-card to its own component	👈 you're here
Add purchased storage available breakdown card for namespaces under project limits	!129757 (merged)

Screenshots or screen recordings

No changes to the UI on this MR

How to set up and validate locally

Visit Namespace Usage quotas in https://gdk.test:3443/groups/<your group here>/-/usage_quotas#storage-quota-tab and make sure everything is rendering properly

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.