feat: use SafeAuthKit to connect wallet

[tnrdd]

Description

Replace Rainbowkit with Safe Auth Kit.

Issue

fixes #400

Checklist:

• [x] My commit message follows the Conventional Commits specification
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have tested my code
• [x] My changes generate no new warnings
• [x] My PR is rebased off the most recent feat/safe branch
• [x] My PR is opened against the feat/safe branch

Alert Reviewers

@codynhat @gravenp

[codynhat]

@tnrdd Can you open a draft PR from feat/safe to develop so we have a Fleek preview build?