As a user, I want to filter out all treasury request referenda

[wliyongfeng]

So I can see treasury requesting status.

Work:

• [ ] Add treasury related field in scan scripts @wliyongfeng
• [ ] Add API for treasury related referenda. This API will also be used by dotreasury applications page.
• [ ] Fronted components.

[Popoulosss]

Figma link

• Add a brief stats in the info/data panel
  • the amount of treasury request referenda
  • the value of current treasury requests
  • the value of current treasury requests in confirming status
• Show the detail in the treasury request stats dialog
  • value and assets
    • total request
    • confirming status
  • treasury request referenda list

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• Add the condition of treasury request(Only show the referenda that requested treasury) to the filter dropdown dialog