Implement rocshmem_ptr in IPC conduit (#197)

* Implement `rocshmem_ptr` in IPC conduit

* tests: add functional test for `rocshmem_ptr`
  - Add safety check for pointer access and condition check before printing results for `rocshmem_ptr` test
  - Use `rocshmem_put` to store `rocshmem_ptr` availability for data validation

tests/functional_tests/tester.hpp

@@ -165,8 +165,11 @@ class Tester {
 
   bool *verification_error;
 
+ protected:
+  bool _print_results = true;
+
  private:
-  bool _print_header = 1;
+  bool _print_header = true;
   void print(uint64_t size);
 
   void barrier();