Handle greenworks.init() errors gracefully

Since we are only using it to track achievements, we can still launch
the game if it fails to initialize, we just have to not run the
achievements interval.

Adds a dialog that tells the user to fix the issue & restart the game to
enable achievements.

electron/main.js

@@ -16,10 +16,18 @@ process.on('uncaughtException', function () {
   process.exit(1);
 });
 
-if (greenworks.init()) {
-  log.info("Steam API has been initialized.");
-} else {
-  log.warn("Steam API has failed to initialize.");
+// We want to fail gracefully if we cannot connect to Steam
+try {
+  if (greenworks.init()) {
+    log.info("Steam API has been initialized.");
+  } else {
+    const error = "Steam API has failed to initialize.";
+    log.warn(error);
+    global.greenworksError = error;
+  }
+} catch (ex) {
+  log.warn(ex.message);
+  global.greenworksError = ex.message;
 }
 
 function setStopProcessHandler(app, window, enabled) {
@@ -113,4 +121,13 @@ app.whenReady().then(async () => {
   } else {
     startWindow(process.argv.includes("--no-scripts"));
   }
+
+  if (global.greenworksError) {
+    dialog.showMessageBox({
+      title: 'Bitburner',
+      message: 'Could not connect to Steam',
+      detail: `${global.greenworksError}\n\nYou won't be able to receive achievements until this is resolved and you restart the game.`,
+      type: 'warning', buttons: ['OK']
+    });
+  }
 });