[decomp] jak2: debug, debug-sphere (#1846)

I wasn't able to 100% complete `debug` due to a bunch of level boundary
debug stuff I couldn't figure out. But, I added a ref test and
documented/copied over everything else into goal_src.

Most of the functions that existed in Jak 1 are identical, others got an
extra param or 2 and some now make copies of arguments instead of
modifying them. There's a bunch of new functions, including all of the
debug functions that used to be in `level-boundary` are now in `debug`.
At the very end of `debug` there's also some weird asm functions
checking for some EE memory controller bug (not sure what's up with
that)?

test/decompiler/reference/jak2/engine/debug/debug-h_REF.gc

@@ -67,6 +67,7 @@
   )
 
 ;; definition for method 3 of type debug-vertex-stats
+;; INFO: this function exists in multiple non-identical object files
 (defmethod inspect debug-vertex-stats ((obj debug-vertex-stats))
   (when (not obj)
     (set! obj obj)