chore: migrate wiki-seed docs from repo into the GitHub wiki

[RyanBayne]

Summary

When the GitHub wiki was unavailable, a set of starter developer docs were committed to the repo at:

documentation/developers/wiki-seed/

The wiki is now live at https://github.com/LOLinDark/StreamerOps/wiki. The content in wiki-seed should be moved into the wiki so it is discoverable and editable there, and the in-repo folder can then be removed to keep the repo tidy.

Pages to migrate

• Home.md (already published)
• Developer-Source.md
• Architecture-Overview.md
• Contribution-Workflow.md

Steps

1. Clone the wiki: git clone https://github.com/LOLinDark/StreamerOps.wiki.git
2. Copy the four pages from documentation/developers/wiki-seed/ into the wiki repo
3. Commit and push to the wiki
4. Delete documentation/developers/wiki-seed/ from the main repo
5. Open a PR removing the wiki-seed folder

Acceptance Criteria

• All four pages exist in the wiki
• documentation/developers/wiki-seed/ is removed from main repo