Add header files based on sections in OpenSHMEM specifications

* rocshmem_RMA.hpp
* rocshmem_AMO.hpp
* rocshmem_SIG_OP.hpp
* rocshmem_COLL.hpp
* rocshmem_P2P_SYNC.hpp
* rocshmem_RMA_X.hpp

examples/rocshmem_allreduce_test.cc

@@ -1,7 +1,6 @@
 /*
 hipcc -c -fgpu-rdc -x hip rocshmem_allreduce_test.cc \
   -I/opt/rocm/include \
-  -I$ROCSHMEM_SRC_DIR/include \
   -I$ROCSHMEM_INSTALL_DIR/include \
   -I$OPENMPI_UCX_INSTALL_DIR/include/
 

examples/rocshmem_alltoall_test.cc

@@ -1,7 +1,6 @@
 /*
 hipcc -c -fgpu-rdc -x hip rocshmem_alltoall_test.cc \
   -I/opt/rocm/include \
-  -I$ROCSHMEM_SRC_DIR/include \
   -I$ROCSHMEM_INSTALL_DIR/include \
   -I$OPENMPI_UCX_INSTALL_DIR/include/
 

examples/rocshmem_broadcast_test.cc

@@ -1,7 +1,6 @@
 /*
 hipcc -c -fgpu-rdc -x hip rocshmem_broadcast_test.cc \
   -I/opt/rocm/include \
-  -I$ROCSHMEM_SRC_DIR/include \
   -I$ROCSHMEM_INSTALL_DIR/include \
   -I$OPENMPI_UCX_INSTALL_DIR/include/
 

examples/rocshmem_getmem_test.cc

@@ -1,7 +1,6 @@
 /*
 hipcc -c -fgpu-rdc -x hip rocshmem_getmem_test.cc \
   -I/opt/rocm/include \
-  -I$ROCSHMEM_SRC_DIR/include \
   -I$ROCSHMEM_INSTALL_DIR/include \
   -I$OPENMPI_UCX_INSTALL_DIR/include/
 

examples/rocshmem_put_signal_test.cc

@@ -1,7 +1,6 @@
 /*
 hipcc -c -fgpu-rdc -x hip rocshmem_put_signal_test.cc \
   -I/opt/rocm/include \
-  -I$ROCSHMEM_SRC_DIR/include \
   -I$ROCSHMEM_INSTALL_DIR/include \
   -I$OPENMPI_UCX_INSTALL_DIR/include/