Print `coord_proj` of the target extremum

Since it is not in the shapefiles.

Inst_eddies/Tests/examine_eddy.f90

@@ -186,6 +186,7 @@ program examine_eddy
   end do
 
   print *, "e%innermost_level = ", e%innermost_level
+  print *, "e%extr%coord_proj = ", e%extr%coord_proj
   print *, "Created shapefile cont_list and shapefile collection SHPC."
 
 end program examine_eddy