feat(ui): auto-resize input win height

[disrupted]

this is just a draft implementation. seeing as the Opencode TUI auto-resizes its prompt I wanted to see if we could add a similar feature to this plugin. curious to hear your thoughts on this.

demo

{
  ui = {
    input = {
      min_height = 0.10,
      max_height = 0.25,
      text = {
        wrap = true,
      },
      auto_hide = true,
    }
  }
}

opencode-native-nvim-autoresize-prompt.mov