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_storage.cpp

@@ -8,11 +8,10 @@
 #include "citra_qt/configuration/configure_storage.h"
 #include "common/file_util.h"
 #include "common/settings.h"
-#include "core/core.h"
 #include "ui_configure_storage.h"
 
-ConfigureStorage::ConfigureStorage(QWidget* parent)
-    : QWidget(parent), ui(std::make_unique<Ui::ConfigureStorage>()) {
+ConfigureStorage::ConfigureStorage(bool is_powered_on_, QWidget* parent)
+    : QWidget(parent), ui(std::make_unique<Ui::ConfigureStorage>()), is_powered_on{is_powered_on_} {
     ui->setupUi(this);
     SetConfiguration();
 
@@ -75,7 +74,7 @@ void ConfigureStorage::SetConfiguration() {
     ui->toggle_virtual_sd->setChecked(Settings::values.use_virtual_sd.GetValue());
     ui->toggle_custom_storage->setChecked(Settings::values.use_custom_storage.GetValue());
 
-    ui->storage_group->setEnabled(!Core::System::GetInstance().IsPoweredOn());
+    ui->storage_group->setEnabled(!is_powered_on);
 }
 
 void ConfigureStorage::ApplyConfiguration() {