style(ui): simplify panels, remove borders and scrollbars, add padding, enable inline mode

television/cable/alias.toml

@@ -11,4 +11,7 @@ output = "{split:=:0}"
 command = "$SHELL -ic 'alias' | grep -E '^(alias )?{split:=:0}='"
 
 [ui.preview_panel]
+border_type = "none"
+scrollbar = false
+padding = { left = 2, right = 1, top = 0, bottom = 0 }
 size = 30