This provides a more concrete example of what a regular file is and isn't.

These enforce requiring the file to exist prior to opening.

This check was preventing files with the Write or Append file access modes from being created, as per the documented behavior in FileAccessMode.
This amends the check to test for the existence of a filesystem object prior to checking whether it is a regular file.
Thanks to liushuyu for pointing out that removing the check altogether would not guard against attempting to open non-regular files such as directories, symlinks, FIFO (pipes), sockets, block devices, or character devices.
The documentation has also been updated for these functions to clarify that a file refers to a regular file.

Similarly, Flush() is typically called to attempt to flush a file into the disk. In the one case where this is used, we do not care whether the flush has succeeded or not, making [[nodiscard]] unnecessary.

There are a lot of scenarios where we don't particularly care whether or not the removal operation and just simply attempt a removal.

As such, removing the [[nodiscard]] attribute is best for these functions.

vk_master_semaphore: Use jthread for debug thread

ci: windows: Copy the Qt styles directory when packaging

core: Make is_powered_on atomic

Fixes potential data races when shutting down.

kernel: Fix missing peak set in KResourceLimit::SetLimitValue

Update dynarmic and add new unsafe CPU option.

nvflinger: Add experimental toggle to disable buffer swap interval limits

externals: httplib: replace custom httplib header with upstream as submodule

Qt can make use of qwindowsvistastyle.dll if present, and our MinGW
container has the library, but it was not being copied during the
packaging process. Thus, yuzu looked like a Windows 98 application when
using the PR-verify artifacts.

This copies over the DLL during packaging, for that sweet-sweet Windows
Vista style.

In addition, set the Qt plugins path instead of the plugins/platforms
path. This way we can use the directory directly, rather than appending
a `..` everytime we need something just outside of it.

host_memory: Correct MEM_RESERVE_PLACEHOLDER

Microsoft defines `MEM_RESERVE_PLACEHOLDER` as `0x00040000`, but our
manually imported version of it drops the last zero.

This also includes a minor change to web_service.cpp - to fix compatibility with upstream changes.

update submodule discord-rpc to latest [now deprecated]

vulkan_debug_callback: Skip logging known false-positive validation errors

Avoids overwhelming the log with validation errors that are not applicable

Enabling this setting will allow some titles to present more frames to
the screen as they become available in the nvflinger buffer queue.

Audio: SDL2 audio backend

texture_cache/util: Avoid relaxed image views on different bytes per block

textures: Add a toggle for GPU Accelerated ASTC decoder 

fsp_srv: Fix filesystem access logging

The Append open mode will create a new file if said file does not exist at a given path, making this call redundant.

This introduces a new setting Enable FS Access Log which saves the filesystem access log to sdmc:/FsAccessLog.txt

If this setting is not enabled, this will indicate to FS to not call OutputAccessLogToSdCard.

Fixes softlocks during loading in Xenoblade Chronicles 2 when certain DLC is enabled.

common: fs: file: Flush the file to the disk when Flush() is called

Per the spec, L1 is clamped to the value 0xff if it is greater than 0xff. An oversight caused us to take the maximum of L1 and 0xff, rather than the minimum.

Huge thanks to wwylele for finding this.

Co-Authored-By: Weiyi Wang <wwylele@gmail.com>

Users may want to fall back to the CPU ASTC texture decoder due to hangs
and crashes that may be caused by keeping the GPU under compute heavy
loads for extended periods of time. This is especially the case in games
such as Astral Chain which make extensive use of ASTC textures.

lm: Demote LM guest logs to LOG_DEBUG

Guest logs are not very useful, as they are intended for use by the game developers during development. As such, they provide little meaning to be logged by yuzu and tend to overwhelm the log output at times.

Avoids API usage errors on UE4 titles leading to crashes.