Fix formatting for Method 4 in README.md

Fix formatting for Method 4 in README.md

Add support for aur installation

Remove obsolete keyhint

Make SSH packages optional (Maxteabag#19)

* Make SSH packages optional

* Update gh worker and readme

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Co-authored-by: Peter Adams <18162810+Maxteabag@users.noreply.github.com>

Connection dialog improvments. Revert provider lazy loading

Simplify installation instructions in README

Removed optional drivers installation instructions for pipx and uv methods.

Refactoring - Add mock layer for connections and queries

Fix wording

Bump version to 0.5.1