[Feature]: Shortcuts for all of the things

Before submitting

• I searched existing issues and did not find the same request.

Problem or unmet use case

I would love to see some more shortcuts available to make navigation around in claudian easier! Some that come to mind:

• switch among the available conversation tabs (1,2,3)
• Navigate through a conversation (go to top, up a conversation, down a conversation, to bottom)
• new chat
• pull up history of conversations

Desired outcome

Just make using claudian easier! I find myself frustrated by having to click everywhere when I am a shortcuts simp

Affected provider

Not provider-specific

Proposed solution

Would be great to see a section in the settings for cluadian to adjust shortcuts, or just see them in the general shortcuts area

Alternatives considered

No response

Additional context

No response