feat: tambah endpoint frontend dan field camera di gate

- Tambah endpoint GET /tariffs (list tariffs)
- Tambah endpoint GET /locations/{code} (detail location)
- Tambah endpoint GET /gates/{location_code}/{gate_code} (detail gate)
- Tambah endpoint GET /tariffs/{location_code}/{gate_code}/{category} (detail tariff)
- Tambah endpoint GET /audit-logs (audit trail history)
- Tambah endpoint GET /entry-events (raw entry events)
- Tambah endpoint GET /realtime/events (realtime events list)
- Tambah field camera di gates (support HLS, RTSP, HTTP streaming)
- Migration 004: add camera column to gates table
- Update validasi dan service untuk support camera field

src/Modules/Retribusi/Frontend/LocationController.php

@@ -52,6 +52,45 @@ class LocationController
         );
     }
 
+    public function getLocation(
+        ServerRequestInterface $request,
+        ResponseInterface $response,
+        array $args
+    ): ResponseInterface {
+        $code = $args['code'] ?? null;
+        if ($code === null || !is_string($code)) {
+            return ResponseHelper::json(
+                $response,
+                [
+                    'error' => 'validation_error',
+                    'fields' => ['code' => 'Invalid location code']
+                ],
+                422
+            );
+        }
+
+        $data = $this->writeService->getLocation($code);
+        if ($data === null) {
+            return ResponseHelper::json(
+                $response,
+                [
+                    'error' => 'not_found',
+                    'message' => 'Location not found'
+                ],
+                404
+            );
+        }
+
+        return ResponseHelper::json(
+            $response,
+            [
+                'success' => true,
+                'data' => $data,
+                'timestamp' => time()
+            ]
+        );
+    }
+
     public function createLocation(
         ServerRequestInterface $request,
         ResponseInterface $response