Miscallenious fixes to gl backend and qt frontend (#6834)

* renderer_gl: Make rasterizer normal class member

* It doesn't need to be heap allocated anymore

* gl_rasterizer: Remove default_texture

* It's unused

* gl_rasterizer: General cleanup

* gl_rasterizer: Lower case lambdas

* Match style with review comments from vulkan backend

* rasterizer_cache: Prevent memory leak

* Since the switch from shared_ptr these surfaces were no longer being destroyed properly. Use our garbage collector for that purpose to destroy it safely for both backends

* rasterizer_cache: Make temp copy of old surface

* The custom surface would override the memory region of the old region resulting in garbage data, this ensures the custom surface is constructed correctly

* citra_qt: Manually create dialog tabs

* Allows for custom constructors which is very useful. While at it, global state is now eliminated from configuration

* citra_qt: Eliminate global system usage

* core: Remove global system usage in memory and HIO

* citra_qt: Use qOverload

* tests: Run clang format

* gl_texture_runtime: Fix surface scaling

src/tests/audio_core/hle/hle.cpp

@@ -8,14 +8,16 @@
 #include "audio_core/lle/lle.h"
 #include "common/common_paths.h"
 #include "common/file_util.h"
+#include "core/core.h"
 #include "core/core_timing.h"
 #include "core/memory.h"
 
 TEST_CASE("DSP LLE vs HLE", "[audio_core][hle]") {
-    Memory::MemorySystem hle_memory;
+    Core::System system;
+    Memory::MemorySystem hle_memory{system};
     Core::Timing hle_core_timing(1, 100);
 
-    Memory::MemorySystem lle_memory;
+    Memory::MemorySystem lle_memory{system};
     Core::Timing lle_core_timing(1, 100);
 
     AudioCore::DspHle hle(hle_memory, hle_core_timing);