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/citra_qt/configuration/configure_cheats.cpp

@@ -9,11 +9,9 @@
 #include "core/cheats/cheat_base.h"
 #include "core/cheats/cheats.h"
 #include "core/cheats/gateway_cheat.h"
-#include "core/core.h"
-#include "core/hle/kernel/process.h"
 #include "ui_configure_cheats.h"
 
-ConfigureCheats::ConfigureCheats(u64 title_id_, QWidget* parent)
+ConfigureCheats::ConfigureCheats(Core::System& system, u64 title_id_, QWidget* parent)
     : QWidget(parent), ui(std::make_unique<Ui::ConfigureCheats>()), title_id{title_id_} {
     // Setup gui control settings
     ui->setupUi(this);
@@ -36,7 +34,7 @@ ConfigureCheats::ConfigureCheats(u64 title_id_, QWidget* parent)
             [this] { SaveCheat(ui->tableCheats->currentRow()); });
     connect(ui->buttonDelete, &QPushButton::clicked, this, &ConfigureCheats::OnDeleteCheat);
 
-    cheat_engine = std::make_unique<Cheats::CheatEngine>(title_id, Core::System::GetInstance());
+    cheat_engine = std::make_unique<Cheats::CheatEngine>(title_id, system);
 
     LoadCheats();
 }