dmnt_cheat_vm: Make use of designated initializers

fsp-srv: Stub Read/WriteSaveDataFileSystemExtraDataWithMaskBySaveDataAttribute

tests/core_timing: Remove pragma optimize(off)

service/ldr: Resolve sign mismatch warnings

registered_cache: Resolve -Wmaybe_uninitialized warnings

sm: Make use of IsBaseOf for GetService

We were performing an int < size_t comparison. We can just correct the
type of the induction variable.

I made a review comment about this in the PR that this was introduced
in (#3955, commit 71c47792), but it
seems to have been missed.

We shouldn't be using this pragma here because it's MSVC specific. This
causes warnings on other compilers.

The test it's surrounding is *extremely* dubious, but for the sake of
silencing warnings on other compilers, we can mark "placebo" as volatile
and be on with it.

file_sys/mode: Make use of DECLARE_ENUM_FLAG_OPERATORS with Mode

Allows for more compact code.

Same behavior, minus a hand-rolled operator.

While we're at it, we can avoid a redundant map lookup.

* ipc: Allow all trivially copyable objects to be passed directly into WriteBuffer

With the support of C++20, we can use concepts to deduce if a type is an STL container or not.

* More agressive concept for stl containers

* Add -fconcepts

* Move to common namespace

* Add Common::IsBaseOf

screenshots: Option to save screenshots immediately in a specified directory + Linux workaround

cpu_manager: Remove redundant std::function declarations

yuzu/main: Remove redundant usages of QStringLiteral("")

Stub these 2 service commands required for Animal Crossing: New Horizons Update 1.4.0

compatible_formats: Add missing header guard

surface_params: Replace questionable usages of the comma operator with semicolons

game_list: Add "Remove" context menu

Fixes an access violation where the file no longer exists at the specified path while being parsed.

Hides the following options when the title id is 0:
- Open Save Location
- Open Mod Data Location
- Open Transferable Shader Cache
- All removal options except Remove Custom Configuration

Adds the following actions:
- Remove Installed Update
- Remove All Installed DLC
- Remove Shader Cache
- Remove Custom Configuration
- Remove All Installed Contents

device_memory: Remove unused system member

configure_graphics: Remove Force 30 FPS mode

The introduction of multicore rendered this setting non-functional as timing code was changed.

This removes the setting entirely.

This isn't used by anything in particular, so it can be removed.

core_timing: Make use of uintptr_t to represent user_data

We can just return the function directly. Making for less reading.

qt_themes: Set QLabel background color to transparent for Dark and Midnight Blue themes

Makes the interface future-proofed for supporting other platforms in the event we ever support platforms with differing pointer sizes. This way, we have a type in place that is always guaranteed to be able to represent a pointer exactly.