migrate contract staking storage into trie #4633
Description
What would you like to be added
1 - migrate the latest contract staking storage from indexer to trie
2 - indexer support historical storage
Why is this needed
How important you think this is for IoTeX
- [] must have
- should have
- [] nice to have
Additional information
Let us know any background or context that would help us better understand the request (for example the particular use-case that prompted this request)