Docs redesign (#728)

* Adding a dark mode
* Adding reference for types to summary pages
* Adding API Reference
* Adding modifiers to methods/fields/etc
* Minimizing files input
* Caching a lot of the output pages
* Cache only for each execution
* Adding API references to existing docs

docs/input/live/status.md

@@ -5,6 +5,9 @@ Description: "*Spectre.Console* can display information about long running tasks
 Highlights: 
     - Custom spinner control for running tasks.
     - Fallback for non-interactive consoles such as CI runners.
+Reference:
+    - T:Spectre.Console.Status
+    - M:Spectre.Console.AnsiConsole.Status
 ---
 
 Spectre.Console can display information about long running tasks in the console.