Function lmpfs_plugin_init

tests/c_api/sample_plugin.cpp:57–61

extern "C"
#endif
int lmpfs_plugin_init(lmpfs_handle_t eng) {
    int r1 = lmpfs_plugin_add_file(eng, "hello.txt",      hello_producer);
    int r2 = lmpfs_plugin_add_file(eng, "pid_count.txt",  pid_count_producer);
    return (r1 == 0 && r2 == 0) ? 0 : -1;
}