[Feature] Provider info api upgrade

[bsjohnson01]

Feature Desc

GET /provider/info should append some new fields:

• provider's name
• latest sync time
• head CID which the provider pushed
• amount of notifications pushed by the provider in the latest 1 min
• amount of DAGs pushed by the provider int he latest 1 min

related issue:

• https://github.com/kenlabs/pando-manage/issues/3

[sssion]

{ "code": 200, "message": "OK",

"Data": [

{

"AddrInfo": { "ID": "12D3KooWG7JaBwuKcmspGaaeokedmhCWH9ocGoc861QrKGuqz38H",

"Addrs": [] },

"Name": "", "DiscoveryAddr": "", "AccountLevel": 0,

"LatestMeta": { "/": "baguqeeqqdkwujko3ycb7wpeu2zbhj4l5ri" }, "LastContactTime": "2022-08-22T08:26:14.45879149Z",

"LastBackupMeta": { "/": "baguqeeqqdkwujko3ycb7wpeu2zbhj4l5ri" } } ] }