[jak 2] ETIE (#2326)

Definitely needs a clean up pass, but I think the functionality is very
close.

There's a few "hacks" still:
- I am using the emerc logic for environment mapping, which doesn't care
about the length of the normals. I can't figure out how the normal
scaling worked in etie. I want to do a little bit more experimentation
with this before merging.
- There is some part about adgifs for TIE and ETIE that I don't
understand. The clearly correct behavior of TIE/ETIE is that the alpha
settings from the adgif shader are overwritten by the settings from the
renderer. But I can't figure out how this happens in all cases.
- Fade out is completely disabled. I think this is fine because the
performance difference isn't bad. But if you are comparing screenshots
with PCSX2, it will make things look a tiny bit different.

game/runtime.cpp

@@ -75,7 +75,7 @@ GameVersion g_game_version = GameVersion::Jak1;
 namespace {
 
 int g_argc = 0;
-char** g_argv = nullptr;
+const char** g_argv = nullptr;
 
 /*!
  * SystemThread function for running the DECI2 communication with the GOAL compiler.
@@ -310,7 +310,7 @@ void dmac_runner(SystemThreadInterface& iface) {
  * Main function to launch the runtime.
  * GOAL kernel arguments are currently ignored.
  */
-RuntimeExitStatus exec_runtime(GameLaunchOptions game_options, int argc, char** argv) {
+RuntimeExitStatus exec_runtime(GameLaunchOptions game_options, int argc, const char** argv) {
   g_argc = argc;
   g_argv = argv;
   g_main_thread_id = std::this_thread::get_id();