[hle,display,overlay,starter,hid] add overlay functions, starter applet (initially), HID handheld for system applets and fw21 stubs (#3080)

Adds fully functional overlay display.
- Enable Overlay Applet via "View" -> "Enable Overlay Display Applet"
- Open the overlay by pressing the home button for over 1s
- Can adjust volume
- Can toggle airplane mode (if on WiFi, maybe if overlay is enabled pretend to be on WiFi?)
- Future TODO(?): Adjust Brightness implementation for host system
- Inputs are properly registered. e.g. if overlay open, application does not register inputs.

You can control volume and airplane mode outside of the emulator window

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3080
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: crueter <crueter@eden-emu.dev>
Co-authored-by: Maufeat <sahyno1996@gmail.com>
Co-committed-by: Maufeat <sahyno1996@gmail.com>

src/core/hle/service/caps/caps_a.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -53,6 +56,7 @@ IAlbumAccessorService::IAlbumAccessorService(Core::System& system_,
         {8021, nullptr, "GetAlbumEntryFromApplicationAlbumEntryAruid"},
         {10011, nullptr, "SetInternalErrorConversionEnabled"},
         {50000, nullptr, "LoadMakerNoteInfoForDebug"},
+        {50011, C<&IAlbumAccessorService::GetAlbumAccessResultForDebug>, "GetAlbumAccessResultForDebug"},
         {60002, nullptr, "OpenAccessorSession"},
     };
     // clang-format on
@@ -197,4 +201,11 @@ Result IAlbumAccessorService::TranslateResult(Result in_result) {
     return in_result;
 }
 
+
+Result IAlbumAccessorService::GetAlbumAccessResultForDebug(Out<Result> out_result) {
+    LOG_WARNING(Service_Capture, "(STUBBED) called");
+    *out_result = ResultSuccess;
+    R_SUCCEED();
+}
+
 } // namespace Service::Capture

src/core/hle/service/caps/caps_a.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -52,6 +55,8 @@ private:
 
     Result TranslateResult(Result in_result);
 
+    Result GetAlbumAccessResultForDebug(Out<Result> out_result);
+
     std::shared_ptr<AlbumManager> manager = nullptr;
 };