feat: Binlog pika cloud

feat: 主从切换时storage层部分执行代码

…ocal_cache

feat: pikacloud support local cache

fix: pikacloud支持flushdb命令

…ug_log

fix: remove debug log

…c_content

pika encode manifest content before upload to sentinel

…_sync

feat: support bgsaveCmd , delbackup cmd, delete def use_s3

…ifest

fix:upload manifest Encoding error

…_shard_bits

change num_shard_bits default value

…o feat/add_stall_metrics