core/hle/service/bcat: Fix compilation errors and implement missing services

- Fix CMIF serialization alignment error in RequestSyncDeliveryCacheWithApplicationIdAndDirectoryName by reordering parameters (DirectoryName before u64)
- Implement missing INotifierService and IDeliveryTaskSuspensionService classes with proper kernel event handling
- Add missing source files to CMakeLists.txt to resolve linker errors
- Update IServiceCreator to properly implement CreateDeliveryCacheProgressService methods instead of leaving them stubbed
- Add ProgressServiceBackend support to IServiceCreator with proper friend class access
- Fix kernel event creation by using KernelHelpers::ServiceContext instead of direct system calls
- Add proper includes for kernel_helpers.h and event management

Signed-off-by: Zephyron <zephyron@citron-emu.org>

src/video_core/buffer_cache/buffer_cache.h

@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #pragma once