Storage usage in Status page

[royendo]

Describe the solution you'd like Be able to view the amount of storage each component is taking, <works well with self-serve, as well>

FR from Angel https://rilldata.slack.com/archives/C07KSF2DPPV/p1725578263474929

In discussion with Product in Cloud Project Home Improvement Notion: https://www.notion.so/rilldata/Cloud-project-home-improvements-d0b72f9771b44957b57dc24a561d6f07