Debug

#99529: Add text file export of status report
#342821: Add Wysiwyg Debug
#469910: Image: Diagnostics

General architectural design will be:

- Debug module will provide the basics (similar to Status report + a list of enabled modules including version)

- (all) contrib modules can append further debugging info

- All of that is exported into a debug info text file for lazy attaching on d.o

- debug.module is kept as small as possible, all functionality lives in include files.

TBD:

- Allow contextual debug information? Such as an export of the view/panel I clicked the 'Debug' link for?