[htmlify] add copying of static files; add favicon

Author: moritz

html-files/favicon.ico

@@ -67,6 +67,11 @@ ($out_dir = 'html', Bool :$debug)
         mkdir "$out_dir/$_" unless "$out_dir/$_".IO ~~ :e;
     }
 
+    for dir('html-files') -> $f {
+        say "Copying $f to $out_dir";
+        ~$f.IO.copy($out_dir ~  '/' ~ $f.basename);
+    }
+
     say 'Reading lib/ ...';
     my @source = recursive-dir('lib').grep(*.f).grep(rx{\.pod$});
     @source.=map: {; .path.subst('lib/', '').subst(rx{\.pod$}, '').subst(:g, '/', '::') => $_ };