Rework is_steam_deck_detected function to detect unknown models

HarmonyLinkLib/include/Enums/EDevice.h

@@ -21,6 +21,7 @@ namespace HarmonyLinkLib
 {
     enum class EDevice : uint8_t
     {
+        UNKNOWN,
         DESKTOP,
         LAPTOP,
         HANDHELD,

HarmonyLinkLib/include/Enums/EPlatform.h

@@ -21,6 +21,7 @@ namespace HarmonyLinkLib
 {
     enum class EPlatform : uint8_t
     {
+        UNKNOWN,
         WINDOWS,
         LINUX,
         MAC,

HarmonyLinkLib/include/Enums/ESteamDeck.h

@@ -0,0 +1,29 @@
+// Copyright (c) 2024 Jordon Brooks
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// 
+//   http://www.apache.org/licenses/LICENSE-2.0
+
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include <cstdint>
+
+// Enum class for representing different types of devices
+namespace HarmonyLinkLib
+{
+    enum class ESteamDeck : uint8_t
+    {
+        NONE, // Device is not a steam deck
+        UNKNOWN, // Device is a steam deck but model cannot be determined
+        LCD,
+        OLED,
+    };
+}