[lldb] Move ScriptInterpreter Interfaces to subdirectory (NFC)

As we're consolidating and  streamlining the various scripting
affordances of lldb, we keep creating new interface files.

This patch groups all the current interface files into a separate sub
directory called `Interfaces` both in the core `Interpreter` directory
and the `ScriptInterpreter` plugin directory.

Differential Revision: https://reviews.llvm.org/D158833

Signed-off-by: Med Ismail Bennani <ismail@bennani.ma>

lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp

@@ -14,12 +14,13 @@
 // LLDB Python header must be included first
 #include "lldb-python.h"
 
+#include "Interfaces/ScriptedPlatformPythonInterface.h"
+#include "Interfaces/ScriptedProcessPythonInterface.h"
+#include "Interfaces/ScriptedThreadPythonInterface.h"
 #include "PythonDataObjects.h"
 #include "PythonReadline.h"
 #include "SWIGPythonBridge.h"
 #include "ScriptInterpreterPythonImpl.h"
-#include "ScriptedPlatformPythonInterface.h"
-#include "ScriptedProcessPythonInterface.h"
 
 #include "lldb/API/SBError.h"
 #include "lldb/API/SBFrame.h"
@@ -1515,6 +1516,11 @@ ScriptInterpreterPythonImpl::CreateScriptedProcessInterface() {
   return std::make_unique<ScriptedProcessPythonInterface>(*this);
 }
 
+ScriptedThreadInterfaceSP
+ScriptInterpreterPythonImpl::CreateScriptedThreadInterface() {
+  return std::make_shared<ScriptedThreadPythonInterface>(*this);
+}
+
 StructuredData::ObjectSP
 ScriptInterpreterPythonImpl::CreateStructuredDataFromScriptObject(
     ScriptObject obj) {