Upgrade Import Modal

[PepperLola]

Description

Show cached and assetpack files in the Import Mira modal, and have an option to delete the individual cached assets. Improve the APS hub/project/file management ui and add a button to sign in if the user isn't already.

Objectives

• [x] Show cached and assetpack files
• [ ] Improve APS UI
• [ ] Show sign-in button

Testing Done

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[!IMPORTANT] Depends on #992 and #982

JIRA Issue