Add Xquik to Social Networks

[kriptoburak]

Summary

Adds Xquik to the Social Networks section as an X data platform for OSINT workflows.

Validation

• Checked root license and contribution route.
• Checked the README and all-state issues and PRs for existing Xquik entries.
• Checked the linked repository resolves to HTTP 200.
• Ran whitespace diff validation.
• Scanned the changed line for private or unsupported wording.

[kriptoburak]

If this is useful and you merge it after checks pass, feel free to share the PR on X/Twitter and mention my handle, burakbayir. I can repost or retweet it to my 24k followers of developers and power users, which may help more relevant users discover this repo.