Add 3GX plugin loader (#6172)

* Initial plugin loader support

* More plugin loader progress

* Organize code and more plugin features

* Fix clang-format

* Fix compilation and add android gui

* Fix clang-format

* Fix macos build

* Fix copy-paste bug and clang-format

* More merge fixes

* Make suggestions

* Move global variable to static member

* Fix typo

* Apply suggestions

* Proper initialization order

* Allocate plugin memory from SYSTEM instead of APPLICATION

* Do not mark free pages as RWX

* Fix plugins in old 3DS mode.

* Implement KernelSetState and notif 0x203

* Apply changes

* Remove unused variable

* Fix dynarmic commit

* Sublicense files with MIT License

* Remove non-ascii characters from license

src/core/core.cpp

@@ -473,6 +473,10 @@ const Kernel::KernelSystem& System::Kernel() const {
     return *kernel;
 }
 
+bool System::KernelRunning() {
+    return kernel != nullptr;
+}
+
 Timing& System::CoreTiming() {
     return *timing;
 }