feat: add AI tools, improve configs, and update README

Changelog:
- Added AI tools and services (Ollama, SearXNG, Open WebUI)
- Updated README with AI tools section and improved formatting
- Added new Rust tools (`cargo-feature`, `cargo-features-manager`)
- Improved virtualisation config with `nvidia-docker`
- Added new work tools (`ssm-session-manager-plugin`, `redli`)
- Updated Helix, Qutebrowser, and Oterm configs
- Added Open WebUI and SearXNG config files

home/.local/share/oterm/config.json

@@ -0,0 +1,4 @@
+{
+  "theme": "catppuccin-mocha",
+  "splash-screen": true
+}