(core) GET endpoint for webhooks returns now data in format {webhooks:[...]}

Summary:
Rework of endpoint GET  for webhooks to make it coherent with other endpoints. Now data should be return in {webhooks:[{id:"...",fields:{"..."}]} format

```
{
    "webhooks": [
        {
            "id": ...
            "fields": {
                "url": ...
                "unsubscribeKey": ...
                "eventTypes": [
                    "add",
                    "update"
                ],
                "isReadyColumn": null,
                "tableId": "...",
                "enabled": false,
                "name": "...",
                "memo": "..."
            },
            "usage": {
                "status": "idle",
                "numWaiting": 0,
                "lastEventBatch": null
            }
        },
        {
            "id": "...",
            "fields": {
                "url": "...",
                "unsubscribeKey": "...",
                "eventTypes": [
                    "add",
                    "update"
                ],
                "isReadyColumn": null,
                "tableId": "...",
                "enabled": true,
                "name": "...",
                "memo": "..."
            },
            "usage": {
                "status": "error",
                "numWaiting": 0,
                "updatedTime": 1689076978098,
                "lastEventBatch": {
                    "status": "rejected",
                    "httpStatus": 404,
                    "errorMessage": "{\"success\":false,\"error\":{\"message\":\"Alias 5a9bf6a8-4865-403a-bec6-b4ko not found\",\"id\":null}}",
                    "size": 49,
                    "attempts": 5
                },
                "lastSuccessTime": null,
                "lastFailureTime": 1689076978097,
                "lastErrorMessage": "{\"success\":false,\"error\":{\"message\":\"Alias 5a9bf6a8-4865-403a-bec6-b4ko not found\",\"id\":null}}",
                "lastHttpStatus": 404
            }
        }
    ]
}
```

Test Plan: new test added to check if GET data fromat is correct. Other tests fixed to handle changed endpoint.

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D3966

app/common/Triggers-ti.ts

@@ -4,6 +4,14 @@
 import * as t from "ts-interface-checker";
 // tslint:disable:object-literal-key-quotes
 
+export const WebhookSubscribeCollection = t.iface([], {
+  "webhooks": t.array("Webhook"),
+});
+
+export const Webhook = t.iface([], {
+  "fields": "WebhookFields",
+});
+
 export const WebhookFields = t.iface([], {
   "url": "string",
   "eventTypes": t.array(t.union(t.lit("add"), t.lit("update"))),
@@ -14,10 +22,6 @@ export const WebhookFields = t.iface([], {
   "memo": t.opt("string"),
 });
 
-export const Webhook = t.iface([], {
-  "fields": "WebhookFields",
-});
-
 export const WebhookBatchStatus = t.union(t.lit('success'), t.lit('failure'), t.lit('rejected'));
 
 export const WebhookStatus = t.union(t.lit('idle'), t.lit('sending'), t.lit('retrying'), t.lit('postponed'), t.lit('error'), t.lit('invalid'));
@@ -31,8 +35,8 @@ export const WebhookSubscribe = t.iface([], {
   "memo": t.opt("string"),
 });
 
-export const WebhookSubscribeCollection = t.iface([], {
-  "webhooks": t.array("Webhook"),
+export const WebhookSummaryCollection = t.iface([], {
+  "webhooks": t.array("WebhookSummary"),
 });
 
 export const WebhookSummary = t.iface([], {
@@ -87,12 +91,13 @@ export const WebhookUsage = t.iface([], {
 });
 
 const exportedTypeSuite: t.ITypeSuite = {
-  WebhookFields,
+  WebhookSubscribeCollection,
   Webhook,
+  WebhookFields,
   WebhookBatchStatus,
   WebhookStatus,
   WebhookSubscribe,
-  WebhookSubscribeCollection,
+  WebhookSummaryCollection,
   WebhookSummary,
   WebhookUpdate,
   WebhookPatch,

app/common/Triggers.ts

@@ -33,7 +33,9 @@ export interface WebhookSubscribe {
 }
 
 
-
+export interface  WebhookSummaryCollection {
+  webhooks: Array<WebhookSummary>;
+}
 export interface WebhookSummary {
   id: string;
   fields: {

app/common/UserAPI.ts

@@ -14,7 +14,12 @@ import {encodeQueryParams} from 'app/common/gutil';
 import {FullUser, UserProfile} from 'app/common/LoginSessionAPI';
 import {OrgPrefs, UserOrgPrefs, UserPrefs} from 'app/common/Prefs';
 import * as roles from 'app/common/roles';
-import {WebhookFields, WebhookSubscribe, WebhookSummary, WebhookUpdate} from 'app/common/Triggers';
+import {
+  WebhookFields,
+  WebhookSubscribe,
+  WebhookSummaryCollection,
+  WebhookUpdate
+} from 'app/common/Triggers';
 import {addCurrentOrgToPath} from 'app/common/urlUtils';
 import omitBy from 'lodash/omitBy';
 
@@ -457,7 +462,7 @@ export interface DocAPI {
   // Get users that are worth proposing to "View As" for access control purposes.
   getUsersForViewAs(): Promise<PermissionDataWithExtraUsers>;
 
-  getWebhooks(): Promise<WebhookSummary[]>;
+  getWebhooks(): Promise<WebhookSummaryCollection>;
   addWebhook(webhook: WebhookFields): Promise<{webhookId: string}>;
   removeWebhook(webhookId: string, tableId: string): Promise<void>;
   // Update webhook
@@ -915,7 +920,7 @@ export class DocAPIImpl extends BaseAPI implements DocAPI {
     return this.requestJson(`${this._url}/usersForViewAs`);
   }
 
-  public async getWebhooks(): Promise<WebhookSummary[]> {
+  public async getWebhooks(): Promise<WebhookSummaryCollection> {
     return this.requestJson(`${this._url}/webhooks`);
   }