Feature Request: Ability to run entire file

Can be actually done with simple
```lua
{
    "<leader>cr",
    "gg0vGg$:QuickCodeRunner<CR>",
    desc = "Quick File Code Runner",
    mode = "n",
},
```
As a keybind, but in relation to #32 would be nice to have custom command for running code without using template (because template would already be there)