scripted-diff: Move ui_interface to the node lib

-BEGIN VERIFY SCRIPT-

 # Move files
 git mv src/ui_interface.h                                          src/node/ui_interface.h
 git mv src/ui_interface.cpp                                        src/node/ui_interface.cpp
 sed -i -e 's/BITCOIN_UI_INTERFACE_H/BITCOIN_NODE_UI_INTERFACE_H/g' src/node/ui_interface.h

 # Adjust includes and makefile
 sed -i -e 's|ui_interface|node/ui_interface|g' $(git grep -l ui_interface)

 # Sort includes
 git diff -U0 | clang-format-diff -p1 -i -v

-END VERIFY SCRIPT-

src/txdb.cpp

@@ -5,10 +5,10 @@
 
 #include <txdb.h>
 
+#include <node/ui_interface.h>
 #include <pow.h>
 #include <random.h>
 #include <shutdown.h>
-#include <ui_interface.h>
 #include <uint256.h>
 #include <util/system.h>
 #include <util/translation.h>