include missing string and utility header to resolve macos clang compilation failure

[SpatLyu]

fix the following compliation failure in macos:

SymbolicDynamics.cpp:162:17: error: implicit instantiation of undefined template 'std::basic_string<char>'
    std::string pat;
                ^
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/iosfwd:209:32: note: template is declared here
    class _LIBCPP_TEMPLATE_VIS basic_string;
                               ^
In file included from SymbolicDynamics.cpp:1:
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/vector:428:64: error: implicit instantiation of undefined template 'std::basic_string<char>'
        __alloc_traits::destroy(__alloc(), _VSTD::__to_address(--__soon_to_be_end));
                                                               ^
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/vector:371:29: note: in instantiation of member function 'std::__vector_base<std::basic_string<char>, std::allocator<std::basic_string<char>>>::__destruct_at_end' requested here
    void clear() _NOEXCEPT {__destruct_at_end(__begin_);}
                            ^
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/vector:465:9: note: in instantiation of member function 'std::__vector_base<std::basic_string<char>, std::allocator<std::basic_string<char>>>::clear' requested here
        clear();
        ^
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/vector:497:5: note: in instantiation of member function 'std::__vector_base<std::basic_string<char>, std::allocator<std::basic_string<char>>>::~__vector_base' requested here
    vector() _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value)
    ^
SymbolicDynamics.cpp:152:28: note: in instantiation of member function 'std::vector<std::basic_string<char>>::vector' requested here
  std::vector<std::string> patterns;
                           ^
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/usr/include/c++/v1/iosfwd:209:32: note: template is declared here
    class _LIBCPP_TEMPLATE_VIS basic_string;