Add `pagesFolder` option to configure a folder that has all of its pages outputted in root.

[Nixinova]

It would be useful for organisation purposes to add a pagesFolder option. This would change the layout from A to B:

A:

• src/
  • templates/: Directory for wiki templates (called like {{this}})
  • images/: Directory to place images (called like [[File:this]])
  • Index.wiki: Example file
  • Other_Page.wiki: Example other file
    B:
• src/
  • templates/: Directory for wiki templates (called like {{this}})
  • images/: Directory to place images (called like [[File:this]])
  • pages/: Directory to put pages in (that are compiled into the root of the output dir)