Reorganize doc/Programs/01-debugging.pod6
Reorganize doc/Programs/01-debugging.pod6

This makes it so the page puts more emphasis on core debugging features
than ecosystem modules and improves the layout of the page to make it
easier to read.

perl6/doc,perl6/doc,perl6/doc,tbrowder/doc,MasterDuke17/doc,tbrowder/doc,tbrowder/doc,tbrowder/doc,perl6/doc,MasterDuke17/doc,MasterDuke17/doc,MasterDuke17/doc,perl6/doc