[hle] make HBLoader work, add -hlaunch option (#3981)

hbloader is required to launch a bunch of shit (particularly hbmenu)

however due to some restrictive metadata validation, it doesn't get recognized as an NSP file

programs like hbmenu require hbloader (since it feeds them data like ConfigEntries and whatnot), launching hbmenu as-is standalone will result in a launchInit() error

adds an option to launch hbmenu via command line

Signed-off-by: lizzie <lizzie@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3981
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Reviewed-by: crueter <crueter@eden-emu.dev>

src/core/hle/kernel/k_capabilities.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -268,7 +271,8 @@ Result KCapabilities::SetHandleTableCapability(const u32 cap) {
 Result KCapabilities::SetDebugFlagsCapability(const u32 cap) {
     // Validate.
     const DebugFlags pack{cap};
-    R_UNLESS(pack.reserved == 0, ResultReservedUsed);
+    // TODO: Enabling this breaks compatibility with HBloader and such
+    //R_UNLESS(pack.reserved == 0, ResultReservedUsed);
 
     DebugFlags debug_capabilities{m_debug_capabilities};
     debug_capabilities.allow_debug.Assign(pack.allow_debug);