Dynamic Actor IDs (#1729)

* Add dynamic actor IDs

* Convert Ivan to use new actor system

* attempt to fix linux build

* attempt to fix linux build

* merge

* Cleanup

* Fix missing math functions on Windows.

* Removes a stubbed function to fix non-windows builds.

* Update soh/soh/ActorDB.cpp

Co-authored-by: Adam Bird <Archez@users.noreply.github.com>

---------

Co-authored-by: Christopher Leggett <chris@leggett.dev>
Co-authored-by: Adam Bird <Archez@users.noreply.github.com>

soh/include/global.h

@@ -3,6 +3,8 @@
 #ifndef GLOBAL_H
 #define GLOBAL_H
 
+#include "math.h"
+
 #include "functions.h"
 #include "variables.h"
 #include "macros.h"