refactor(dftu): phase 5 - move dftu_pw.cpp to source_pw/module_pwdft

- git mv source_lcao/module_dftu/dftu_pw.cpp -> source_pw/module_pwdft/dftu_pw.cpp
- dftu_pw.cpp: include dftu_base.h instead of dftu.h (cal_occ_pw is now
  a Plus_U_Base method, no LCAO types needed)
- source_lcao/module_dftu/CMakeLists.txt: remove dftu_pw.cpp from dftu
  OBJECT library
- source_pw/module_pwdft/CMakeLists.txt: add dftu_pw.cpp to module_pwdft
  OBJECT library
- Makefile.Objects: add dftu_pw.o to OBJS_SRCPW (was missing entirely
  from OBJS_DFTU before)

Verified: make -j 30 in build_max_para_test succeeds; all dftu unit
tests pass (dftu_core_test: 10, dftu_pw_test: 11, dftu_operator_test:
15, MODULE_LCAO_operator_dftu_test: 2).

Author: abacus_fixer

source/Makefile.Objects

@@ -742,6 +742,7 @@ OBJS_SRCPW=h_ewald_pw.o\
     setup_pwwfc.o\
     update_cell_pw.o\
     dftu_base.o\
+    dftu_pw.o\
     setup_dftu_pw.o\
     deltaspin_pw.o\
     force_pw.o\

source/source_lcao/module_dftu/CMakeLists.txt

@@ -7,7 +7,6 @@ list(APPEND objects
       dftu_tools.cpp
       dftu_occup.cpp
       dftu_hamilt.cpp
-      dftu_pw.cpp
 )
 
 add_library(

source/source_pw/module_pwdft/CMakeLists.txt

@@ -13,6 +13,7 @@ list(APPEND objects
     op_pw_exx_ace.cpp
     op_pw_exx_pot.cpp
     dftu_base.cpp
+    dftu_pw.cpp
     setup_pot.cpp
     setup_pwrho.cpp
     setup_pwwfc.cpp

…urce/source_lcao/module_dftu/dftu_pw.cpp source/source_pw/module_pwdft/dftu_pw.cppsource/source_lcao/module_dftu/dftu_pw.cpp renamed to source/source_pw/module_pwdft/dftu_pw.cpp source/source_lcao/module_dftu/dftu_pw.cpp renamed to source/source_pw/module_pwdft/dftu_pw.cpp

@@ -1,4 +1,4 @@
-#include "dftu.h"
+#include "source_pw/module_pwdft/dftu_base.h"
 #include "source_pw/module_pwdft/onsite_proj.h"
 #include "source_base/parallel_reduce.h"
 #include "source_io/module_parameter/parameter.h"