feat: show history list under the command bar and fix select logic

[yuchen9]

this pr mainly focus on chat history, including:

1. display the history list under the command bar, which happens only in chat.
2. fix the history select logic and styles. when you use ctrl + shift +↑ to browse the history prompt, you cannot get back to the initial message but only the last historical prompt.

related #402

display the history list under the command bar, which happens only in chat.

before & after

fix the history select logic and styles. can get to the initial message when use ctrl + shift +↑.

before & after

Summary Video

2023-04-02.12.46.43.mov

[truell20]

Thank you for doing this 🙂 History should be easier to access in the newest versions of cursor (the history icon on the top part of the chat bar)