Raw loader /publish markdown pages

This is needed so our incoming Retribute website can reuse our existing Code of conduct instead of copy-pasting it ;)

Basically:

• We store important pages in markdown files (under src/pages)
• Funkwhale.audio loads these files directly and interpret these as markdown
• The markdown files are also published under /public/pages, meaning other websites could fetch the markdown content using ajax

cc @Sporiff

src/pages/coc/en_US.md

-export default `
 # Code of Conduct
 
 ## Our Pledge
@@ -78,5 +77,3 @@ Contacting moderators:
 
 * Eliot Berriot (by email at [contact@eliotberriot.com](mailto:contact@eliotberriot.com))
 * Ginny McQueen, for english requests only (by email at [email@ginny.today](mailto:email@ginny.today))
-
-`;