RE COutput/InputStream and friends and migrate over

This branch is probably still horribly broken, but it's a good first step to migrating away from having hecl embedded in the runtime

Runtime/Character/CSegIdList.cpp

@@ -3,7 +3,7 @@
 namespace metaforce {
 
 CSegIdList::CSegIdList(CInputStream& in) {
-  u32 count = in.readUint32Big();
+  u32 count = in.ReadLong();
   x0_list.reserve(count);
   for (u32 i = 0; i < count; ++i)
     x0_list.emplace_back(in);