Complete delink workflow; separate from decomp

We can now create a fresh Ghidra project, import the JSRF executable
into it, import symbols into it, delink object files from it, and then
decompile with objdiff.  Just needs some documentation.

src/Jet2.cpp

@@ -1,19 +0,0 @@
-#pragma bss_seg(".data")
-
-#include "Core.hpp"
-
-
-// Address: 0x0022FCE0
-// Core.cpp really seems like a more natural place to put this, but it doesn't
-// appear to be with Core.cpp's other data in .data
-Game * g_game;
-
-
-// Address: 0x0006F9E0
-// Matching: yes
-void main(void) {
-    g_game = new Game(NULL, 0);
-    g_game->initExecRootObj();
-    g_game->mainLoop();
-    delete g_game;
-}