* Init base buffer and storage

* Use ratelimit as middleware

* Pass style check

* Keep the return original return value

* Add buffer.view

* Add replace flag on sample, rewrite middleware processing

* Test slicing

* Add buffer copy middleware

* Add update/delete api in buffer, rename middleware

* Implement update and delete api of buffer

* add naive use time count middleware in buffer

* Rename next to chain

* feature(nyz): add staleness check middleware and polish buffer

* feature(nyz): add naive priority experience replay

* Sample by indices

* Combine buffer and storage layers

* Support indices when deleting items from the queue

* Use dataclass to save buffered data, remove return_index and return_meta

* Add ignore_insufficient

* polish(nyz): add return index in push and copy same data in sample

* Drop useless import

* Fix sample with indices, ensure return size is equal to input size or indices size

* Make sure sampled data in buffer is different from each other

* Support sample by grouped meta key

* Support sample by rolling window

* Add import/export data in buffer

* Padding after sampling from buffer

* Polish use_time_check

* Use buffer as dataset

* Set collate_fn in buffer test

* feature(nyz): add deque buffer compatibility wrapper and demo

* polish(nyz): polish code style and add pong dqn new deque buffer demo

* feature(nyz): add use_time_count compatibility in wrapper

* feature(nyz): add priority replay buffer compatibility in wrapper

* Improve performance of buffer.update

* polish(nyz): add priority max limit and correct flake8

* Use __call__ to rewrite middleware

* Rewrite buffer index

* Fix buffer delete

* Skip first item

* Rewrite buffer delete

* Use caller

* Use caller in priority

* Add group sample
Co-authored-by: Nniuyazhe <niuyazhe@sensetime.com>