Fire telemetry event when a github dependency is fetched (#1747)

As the title says -- simple enough.

vscode/src/projectSystem.ts

@@ -11,6 +11,7 @@ import {
 import * as vscode from "vscode";
 import { URI, Utils } from "vscode-uri";
 import { invokeAndReportCommandDiagnostics } from "./diagnostics";
+import { sendTelemetryEvent, EventType } from "./telemetry";
 
 /** Returns the manifest document if one is found
  * returns null otherwise
@@ -247,6 +248,14 @@ export async function fetchGithubRaw(
   const uri = `${githubEndpoint}/${owner}/${repo}/${ref}/${pathNoLeadingSlash}`;
   log.info(`making request to ${uri}`);
   const response = await fetch(uri);
+  // note that if the above fetch fails, we will never send this telemetry event.
+  // however, this is okay, because if a network request to github is failing, it is likely
+  // that the user's network itself is suspect and the telemetry wouldn't send anyway.
+  sendTelemetryEvent(
+    EventType.FetchGitHub,
+    { status: response.status.toString() },
+    {},
+  );
   if (!response.ok) {
     log.warn(
       `fetchGithubRaw: ${owner}/${repo}/${ref}/${path} -> ${response.status} ${response.statusText}`,

vscode/src/telemetry.ts

@@ -43,6 +43,7 @@ export enum EventType {
   FormatStart = "Qsharp.FormatStart",
   FormatEnd = "Qsharp.FormatEnd",
   CreateProject = "Qsharp.CreateProject",
+  FetchGitHub = "Qsharp.FetchGitHub",
   TriggerCircuit = "Qsharp.TriggerCircuit",
   CircuitStart = "Qsharp.CircuitStart",
   CircuitEnd = "Qsharp.CircuitEnd",
@@ -224,6 +225,10 @@ type EventTypes = {
     properties: Empty;
     measurements: Empty;
   };
+  [EventType.FetchGitHub]: {
+    properties: { status: string };
+    measurements: Empty;
+  };
   [EventType.TriggerCircuit]: {
     properties: {
       associationId: string;