Add Endurain (app request #1043)

Endurain/Endurain.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace App\SupportedApps\Endurain;
+
+class Endurain extends \App\SupportedApps
+{
+}

Endurain/app.json

@@ -0,0 +1,10 @@
+{
+  "appid": "5ac374ee16585535d77299357a600e284a43799b",
+  "name": "Endurain",
+  "website": "https://endurain.com",
+  "license": "GNU Affero General Public License v3.0 or later",
+  "description": "Endurain is a self-hosted fitness tracking service, a privacy-first home for your activities, gear and health data. No lock-in, no data mining. Just your training history, on infrastructure you control.",
+  "enhanced": false,
+  "tile_background": "dark",
+  "icon": "endurain.png"
+}