Refactor crash/bug reporter system

* The UI dialog is now in Qt. We run qrenderdoc.exe with a very minimal
  startup to display the dialog and send the report.
* The flow has been simplified to have less text and an easier time to
  just click through and send.
* On the first report, the user is gently nudged to enter their email
  address for contact and by default the email is saved for next time.
  They're not nagged more than once about this.
* Optionally the user can select to upload the capture. This is always
  default off, and there is a confirmation dialog making sure the user
  intended to select it.
* After the bug is reported, a unique URL is generated and returned
  which the user can then click back on to see if there's any update. By
  default the UI will also remember the URL and check it every couple
  of days and alert the user in the help menu that there's an update.

renderdoc/api/replay/renderdoc_replay.h

@@ -1880,9 +1880,16 @@ DOCUMENT("Internal function for initialising global process environment in a rep
 extern "C" RENDERDOC_API void RENDERDOC_CC RENDERDOC_InitGlobalEnv(GlobalEnvironment env,
                                                                    const rdcarray<rdcstr> &args);
 
-DOCUMENT("Internal function for triggering exception handler.");
-extern "C" RENDERDOC_API void RENDERDOC_CC RENDERDOC_TriggerExceptionHandler(void *exceptionPtrs,
-                                                                             bool crashed);
+DOCUMENT("Internal function for creating a bug report zip.");
+extern "C" RENDERDOC_API void RENDERDOC_CC RENDERDOC_CreateBugReport(const char *logfile,
+                                                                     const char *dumpfile,
+                                                                     rdcstr &report);
+
+DOCUMENT("Internal function for registering a memory region to be saved with crash dumps.");
+extern "C" RENDERDOC_API void RENDERDOC_CC RENDERDOC_RegisterMemoryRegion(void *base, size_t size);
+
+DOCUMENT("Internal function for unregistering a memory region to be saved with crash dumps.");
+extern "C" RENDERDOC_API void RENDERDOC_CC RENDERDOC_UnregisterMemoryRegion(void *base);
 
 DOCUMENT(R"(Sets the location for the diagnostic log output, shared by captured programs and the
 analysis program.