feat: add workspace sidebar to `/explore`

[zeucapua]

Description

Implements the WorkspaceLayout in the Tool component used to render the /explore page.

Related Tickets & Documents

Closes #3513

Mobile & Desktop Screenshots/Recordings

https://github.com/open-sauced/app/assets/20603494/e436039f-dcc2-4b1d-881b-be7c8d6f4015

Steps to QA

Tier (staff will fill in)

• [ ] Tier 1
• [ ] Tier 2
• [ ] Tier 3
• [x] Tier 4

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