Adds AltStore (Stable) to Alpha source

AltStore/Resources/apps-alpha.json

@@ -56,6 +56,34 @@
         "https://user-images.githubusercontent.com/705880/65813009-f2ae8600-e183-11e9-9eb7-704effc11173.png",
         "https://user-images.githubusercontent.com/705880/65601117-58b5c600-df56-11e9-9c19-9a5ba5da54cf.PNG"
       ]
+    },
+    {
+      "name": "AltStore (Stable)",
+      "bundleIdentifier": "com.rileytestut.AltStore",
+      "developerName": "Riley Testut",
+      "version": "1.3",
+      "versionDate": "2020-04-09T17:00:00-07:00",
+      "versionDescription": "Still haven't written update notes yet...",
+      "downloadURL": "https://f000.backblazeb2.com/file/altstore/alpha/altstore/1_3.ipa",
+      "localizedDescription": "AltStore is an alternative app store for non-jailbroken devices. \n\nThis version of AltStore allows you to install Delta, an all-in-one emulator for iOS, as well as sideload other .ipa files from the Files app.",
+      "iconURL": "https://user-images.githubusercontent.com/705880/65270980-1eb96f80-dad1-11e9-9367-78ccd25ceb02.png",
+      "tintColor": "018084",
+      "size": 2532661,
+      "screenshotURLs": [
+        "https://user-images.githubusercontent.com/705880/78942028-acf54300-7a6d-11ea-821c-5bb7a9b3e73a.PNG",
+        "https://user-images.githubusercontent.com/705880/78942222-0fe6da00-7a6e-11ea-9f2a-dda16157583c.PNG",
+        "https://user-images.githubusercontent.com/705880/65605577-332cba80-df5e-11e9-9f00-b369ce974f71.PNG"
+      ],
+      "permissions": [
+        {
+          "type": "background-fetch",
+          "usageDescription": "AltStore periodically refreshes apps in the background to prevent them from expiring."
+        },
+        {
+          "type": "background-audio",
+          "usageDescription": "Allows AltStore to run longer than 30 seconds when refreshing apps in background."
+        }
+      ]
     }
   ],
   "news": [