[Feature]: Add Zeek page to docs

### Description

The docs reference `Zeek` in multiple guides/tutorials, but there's not consolidated page with information about him. Create a dedicated page and `` component that we can re-use throughout our docs based on the following: https://www.notion.so/matterlabs/ZKsync-Brand-Resources-750bb7b1f3d14ebe9f539a86901c4a1c?pvs=4#5abb09058e9f48fda209d2b7332d9da0

### Rationale

This will provide more clarity and background for information about the beloved zkSync mascot

### Code of Conduct

- [X] I agree to follow this project's Code of Conduct

Start by reviewing the existing guides and tutorials that reference Zeek, then inspect how reusable documentation components are organized. Use the linked Notion brand resources for the page content and mascot presentation; done means a dedicated Zeek page and a reusable component are available throughout the docs.

Written by the indexing model from the issue text.