Mono UI, high productivity, simple and clean code

[alexeypetrushin]

Interactive File System 
[Explorer](https://github.com/al6x/nim/blob/main/mono/mono/examples/explorer.nim)
 in 20 lines of Nim and [20sec video 
demo](https://www.youtube.com/watch?v=mYZ9A3NiApk)
    
    
    import base, mono/[core, http], std/os
    
    type Ls = ref object of Component
      path: string
    
    proc render(self: Ls): El =
      el"":
        el("input", (autofocus: true, placeholder: "Path..."), 
it.bind_to(self.path))
        let path = self.path
        if not path.is_empty:
          if fs.exist path:
            if get_file_info(path).kind == pc_file:
              el("pre", (text: fs.read(path)))
            else:
              for entry in fs.read_dir(path):
                el("", (text: entry.name))
          else:
            el("", (text: fmt"File '{path}' doesn't exist"))
    
    run_http_server(() => Ls())
    
    
    Run