Add data export for nervos dao

[Keith-CY]

The following data are required and expected to be exported on page

1. new deposits during a specific period
2. top depositors(by deposited capacity) at specific time

[Sven-TBD]

A proposal is proposed here . @rabbitz @PainterPuppets Could you please provide an ETA for this issue?
https://vs0cjf.axshare.com/?id=mxvmva&p=_592_add_data_export_for_nervos_dao&g=1

[Sven-TBD]

And please pay attention to the data export function on Nervos Dao Depositors Page. The text is a little bit different from others.

[PainterPuppets]

ui: https://www.figma.com/design/6XNoimRDbFTTNm016rbIdU/Magickbase?node-id=12062-37707&t=i4Gx3rPxf5BZiWKa-0
mobile: https://www.figma.com/design/6XNoimRDbFTTNm016rbIdU/Magickbase?node-id=12068-43348&t=i4Gx3rPxf5BZiWKa-0

[rabbitz]

PR: nervosnetwork/ckb-explorer#1864

export contract transactions

# api
GET /api/v1/contract_transactions/download_csv

# params
start_date: export start date
end_date: export end date
start_number: export start block number
end_number: export end block number

export depositors

# api
GET /api/v1/dao_depositors/download_csv

# params
start_date: export start date
end_date: export end date
start_number: export start block number
end_number: export end block number

[PainterPuppets]

PR: nervosnetwork/ckb-explorer#1864

export contract transactions

# api
GET /api/v1/contract_transactions/download_csv

# params
start_date: export start date
end_date: export end date
start_number: export start block number
end_number: export end block number

export depositors

# api
GET /api/v1/dao_depositors/download_csv

# params
start_date: export start date
end_date: export end date
start_number: export start block number
end_number: export end block number

Currently the GET /api/v1/dao_depositors/download_csv api seems to return the 500 error, please take a look at it.

[rabbitz]

Fixed PR: nervosnetwork/ckb-explorer#1877

[Sven-TBD]

We need to aggregate and export the address data.
For example, if an address has multiple Live Cells (Deposit, Withdraw request), their Capacities should be summed up, and the exported file should only include the final address and its total amount.

我们需要聚合导出地址的数据，比如说 一个地址有多个Live Cell （Deposit，Withdraw request）， 把他们的 Capacity 加一起，导出文件中应只有最后的地址和其数量

So there would be only two columns here, like:

@rabbitz cc @FrederLu

[rabbitz]

PR: nervosnetwork/ckb-explorer#2052