(core) Endpoint to report on the latest version of stable grist-core image

Summary:
New endpoint `/api/version` that returns latest version of stable docker image in format:
```
{"latestVersion":"1.1.12","
  updatedAt":"2024-03-06T06:28:25.752337Z","
  isCritical":false,
 "updateURL":"https://hub.docker.com/r/gristlabs/grist"
}
```

It connects to docker hub API and reads the version from the tag lists endpoint.
Stores telemetry passed from the client such us: current version, deployment type, installationId and others.

Test Plan: Added new test

Reviewers: georgegevoian

Reviewed By: georgegevoian

Differential Revision: https://phab.getgrist.com/D4220

app/common/SortFunc.ts

@@ -28,7 +28,7 @@ type Comparator = (val1: any, val2: any) => number;
  * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/localeCompare
  */
 const collator = new Intl.Collator(undefined, {numeric: true});
-function naturalCompare(val1: any, val2: any) {
+export function naturalCompare(val1: any, val2: any) {
   if (typeof val1 === 'string' && typeof val2 === 'string') {
     return collator.compare(val1, val2);
   }

app/common/Telemetry.ts

@@ -1740,6 +1740,22 @@ export const TelemetryContracts: TelemetryContracts = {
       },
     },
   },
+  checkedUpdateAPI: {
+    category: "SelfHosted",
+    description: 'Triggered when the app checks for updates.',
+    minimumTelemetryLevel: Level.limited,
+    retentionPeriod: 'indefinitely',
+    metadataContracts: {
+      installationId: {
+        description: 'The installation id of the client.',
+        dataType: 'string',
+      },
+      deploymentType: {
+        description: 'The deployment type of the client.',
+        dataType: 'string',
+      },
+    },
+  }
 };
 
 type TelemetryContracts = Record<TelemetryEvent, TelemetryEventContract>;
@@ -1810,6 +1826,7 @@ export const TelemetryEvents = StringUnion(
   'visitedForm',
   'submittedForm',
   'changedAccessRules',
+  'checkedUpdateAPI'
 );
 export type TelemetryEvent = typeof TelemetryEvents.type;
 
@@ -1824,7 +1841,8 @@ type TelemetryEventCategory =
   | 'TeamSite'
   | 'ProductVisits'
   | 'AccessRules'
-  | 'WidgetUsage';
+  | 'WidgetUsage'
+  | 'SelfHosted';
 
 interface TelemetryEventContract {
   description: string;