Add resident BSSN GPU point interpolation

AMSS_NCKU_source/bssn_rhs_cuda.h

@@ -83,6 +83,25 @@ int bssn_cuda_pack_state_region_to_host_buffer(void *block_tag,
                                                int i0, int j0, int k0,
                                                int sx, int sy, int sz);
 
+int bssn_cuda_interp_state_point3(void *block_tag,
+                                  int *ex,
+                                  int state0,
+                                  int state1,
+                                  int state2,
+                                  double x0,
+                                  double y0,
+                                  double z0,
+                                  double dx,
+                                  double dy,
+                                  double dz,
+                                  double px,
+                                  double py,
+                                  double pz,
+                                  int ordn,
+                                  int symmetry,
+                                  const double *soa3,
+                                  double *out3);
+
 int bssn_cuda_unpack_state_region_from_host_buffer(void *block_tag,
                                                    int state_index,
                                                    double *host_buffer,