enhance: [2.5] add example code for create_collection, drop_collection, load_collection, release_collection, create_index, drop_index, create_partition, drop_partition, load_partition and release_partition

enhance: [2.5] add example code for create_collection, drop_collection, load_collection, release_collection, create_index, drop_index, create_partition, drop_partition, load_partition and release_partition #2681