create file handles

testify_file_load

THandle *testify_file_load(char *path);

testify_file_save

THandle *testify_file_save(char *path);

testify_file_size

uint64 testify_file_size(THandle *handle);

testify_file_position_set

void testify_file_position_set(THandle *handle, uint64 pos);

testify_file_position_get

uint64 testify_file_position_get(THandle *handle);