[BitSail][Connector] Migrate mongoDB legacy connector to V1 interface

[garyli1019]

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Migrate mangoDB connector to V1 interface. We did the same for Redis #98

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[wuchunfu]

@garyli1019 Please assign to me, thanks

[garyli1019]

@wuchunfu sure

[BlockLiu]

Hi @wuchunfu, any progress for this issue? You could open a PR first, and we will keep an eye on it.

[healchow]

@wuchunfu Hello, buddy, are you still doing this task? If not, let me finish it.

[lichang-bd]

looking forward to your contribution @wuchunfu