update supported libraries list to include Bitcoin Connect & others

[Dunsin-cyber]

Currently, the documentation only references the Alby JS SDK and Alby Lightning Tools.

We need to include Bitcoin Connect too and accommodate new tools/knowledge as they are added.

https://github.com/getAlby/alby-agent-skill/blob/ce568a4c634f2a5c801d19b1a458bb375edc3e81/README.md?plain=1#L7