Implemented basic env var stuff

src/assets/env.js

@@ -0,0 +1,7 @@
+(function(window) {
+    window["env"] = window["env"] || {};
+  
+    // Environment variables
+    window["env"]["apiUrl"] = "http://localhost:5001";
+    window["env"]["debug"] = false;
+  })(this);

src/assets/env.template.js

@@ -0,0 +1,7 @@
+(function(window) {
+    window.env = window.env || {};
+  
+    // Environment variables
+    window["env"]["apiUrl"] = "${API_URL}";
+    window["env"]["debug"] = "${DEBUG}";
+  })(this);