Move API-agnostic pipeline state wrapper into core interface

* There's no need for this to be in the UI, and moving it allows it to be used
  from script which is very useful.

qrenderdoc/Code/pyrenderdoc/pyrenderdoc_stub.cpp

@@ -24,6 +24,7 @@
 
 #include <Python.h>
 #include <stdlib.h>
+#include <algorithm>
 
 #include "renderdoc_replay.h"
 
@@ -38,6 +39,8 @@ std::string DoStringise(const uint32_t &el)
 
 #include "renderdoc_tostr.inl"
 
+#include "pipestate.inl"
+
 extern "C" PyThreadState *GetExecutingThreadState(PyObject *global_handle)
 {
   return NULL;