FetchAllInstitutionsAsync should return total number of institution to be able to loop

[sebastienlabine]

The FetchAllInstitutionsAsync method should return the total number of institution to allow us to fetch them all correctly.

Also the SearchAllRequest.AdditionalOptions has a typo for "IncludeMetadata" { InclueMetadata=true }, https://plaid.com/docs/api/institutions/

{
  "institutions": [
    {
      "country_codes": [
        "US"
      ],
      "institution_id": "ins_1",
      "name": "Bank of America",
      "oauth": false,
      "products": [
        "assets",
        "auth",
        "balance",
        "transactions",
        "identity",
        "liabilities"
      ],
      "routing_numbers": [
        "011000138",
        "011200365",
        "011400495",
        "011500010",
        "011900254",
        "021000322",
        "021200339",
        "026009593",
        "031202084",
        "051000017",
        "052001633",
        "053000196",
        "053904483",
        "054001204",
        "061000052",
        "063100277",
        "064000020",
        "071214579",
        "072000805",
        "073000176",
        "081000032",
        "081904808",
        "082000073",
        "101100045",
        "103000017",
        "107000327",
        "111000025",
        "121000358",
        "122101706",
        "122400724",
        "123103716",
        "125000024",
        "323070380"
      ]
    }
  ],
  "request_id": "tbFyCEqkU774ZGG",
  "total": 11384
}

[viceroypenguin]

Both of these are included as of v2.7.0 of Going.Plaid library.

[sebastienlabine]

@viceroypenguin What is Going.Plaid? Is it replacing this library?

[viceroypenguin]

@sebastienlabine - I forked this library in order to do more regular releases.