added installations, push scoped tokens, push api

src/Api/Controllers/PushController.cs

@@ -0,0 +1,26 @@
+using System;
+using Microsoft.AspNetCore.Mvc;
+using Bit.Core.Services;
+using Microsoft.AspNetCore.Authorization;
+
+namespace Bit.Api.Controllers
+{
+    [Route("push")]
+    [Authorize("Push")]
+    public class PushController : Controller
+    {
+        private readonly IPushRegistrationService _pushRegistrationService;
+
+        public PushController(
+            IPushRegistrationService pushRegistrationService)
+        {
+            _pushRegistrationService = pushRegistrationService;
+        }
+
+        [HttpGet("register")]
+        public Object Register()
+        {
+            return new { Foo = "bar" };
+        }
+    }
+}