Added first implementation of subscriptions

Moonlight/App/Http/Controllers/Api/Moonlight/PaymentsController.cs

@@ -0,0 +1,50 @@
+using Microsoft.AspNetCore.Mvc;
+using Moonlight.App.Services;
+
+namespace Moonlight.App.Http.Controllers.Api.Moonlight;
+
+[ApiController]
+[Route("api/moonlight/payments")]
+public class PaymentsController : Controller
+{
+    private readonly ConfigService ConfigService;
+    private readonly SubscriptionService SubscriptionService;
+
+    public PaymentsController(ConfigService configService, SubscriptionService subscriptionService)
+    {
+        ConfigService = configService;
+        SubscriptionService = subscriptionService;
+    }
+
+    [HttpGet("generate")]
+    public async Task<ActionResult> GenerateGet([FromQuery] string key, [FromQuery] int subscriptionId)
+    {
+        var validKey = ConfigService
+            .GetSection("Moonlight")
+            .GetSection("Payments")
+            .GetValue<string>("Key");
+
+        if (key != validKey)
+            return StatusCode(403);
+
+        var token = await SubscriptionService.ProcessGenerate(subscriptionId);
+
+        return Ok(token);
+    }
+    
+    [HttpPost("generate")]
+    public async Task<ActionResult> GeneratePost([FromQuery] string key, [FromQuery] int subscriptionId)
+    {
+        var validKey = ConfigService
+            .GetSection("Moonlight")
+            .GetSection("Payments")
+            .GetValue<string>("Key");
+
+        if (key != validKey)
+            return StatusCode(403);
+
+        var token = await SubscriptionService.ProcessGenerate(subscriptionId);
+
+        return Ok(token);
+    }
+}