feat(services): Implement nn::socket, nn::nifm, and nn::nim networking services

Add Nintendo Switch network service implementations to support modders
working with network functionality in their game modifications:

- Add nn::socket utilities including InetAton and Connect functions
- Implement sockaddr/in_addr structures matching official Nintendo APIs
- Add nn::nifm networking interface services with IsNetworkAvailable and SubmitNetworkRequest
- Implement nn::nim network installation management services
- Fix BSD socket implementation to properly handle proxy packets
- Add Service_BSD log category for better debugging

These changes provide crucial networking API support for modders like
MaxLastBreath and projects like NX Optimizer (https://www.nxoptimizer.com/)
that need to hook into Nintendo's network services for code injection mods.
This implementation follows the official documentation at SwitchBrew and
enables proper network connectivity in modded games.

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

src/common/logging/filter.cpp

@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: 2014 Citra Emulator Project
+// SPDX-FileCopyrightText: 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <algorithm>
@@ -89,6 +90,7 @@ bool ParseFilterRule(Filter& instance, Iterator begin, Iterator end) {
     SUB(Service, BGTC)                                                                             \
     SUB(Service, BTDRV)                                                                            \
     SUB(Service, BTM)                                                                              \
+    SUB(Service, BSD)                                                                              \
     SUB(Service, Capture)                                                                          \
     SUB(Service, ERPT)                                                                             \
     SUB(Service, ETicket)                                                                          \

src/common/logging/types.h

@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
@@ -57,6 +58,7 @@ enum class Class : u8 {
     Service_BPC,        ///< The BPC service
     Service_BTDRV,      ///< The Bluetooth driver service
     Service_BTM,        ///< The BTM service
+    Service_BSD,        ///< The BSD sockets service
     Service_Capture,    ///< The capture service
     Service_ERPT,       ///< The error reporting service
     Service_ETicket,    ///< The ETicket service