Abstracts most of the input mechanisms under an InputSubsystem class
that is managed by the frontends, eliminating any static constructors
and destructors. This gets rid of global accessor functions and also
allows the frontends to have a more fine-grained control over the
lifecycle of the input subsystem.

This also makes it explicit which interfaces rely on the input subsystem
instead of making it opaque in the interface functions. All that remains
to migrate over is the factories, which can be done in a separate
change.

Supports the Left, Right, Middle, Backward and Forward mouse buttons.

Co-authored-by: James Rowe <jroweboy@gmail.com>
Co-authored-by: Its-Rei <kupfel@gmail.com>

Migrates the Telemetry namespace into the Common namespace to make the
code consistent with the rest of our common code.

There's no need to translate an empty string. This just gives
translators unnecessary work.

Migrates a remaining common file over to the Common namespace, making it
consistent with the rest of common files.

This also allows for high-traffic FS related code to alias the
filesystem function namespace as

namespace FS = Common::FS;

for more concise typing.

While we're in the same area, we can ensure GameDir member variables are
always initialized to consistent values.

Creates a new entry in the Emulation menu called "Configure Current Game..." that is only available if a game is currently being executed in yuzu. When selected, it opens the game properties dialog for the current game.

Thanks to @BSoDGamingYT for reminding me to do this.

We can query the given object name directly from the widget itself. This
removes any potential for forgetting to change the name if the widget
gets renamed and makes the API much simpler (just pass in the widget,
and not worry about its name).

Eliminates a verbose function cast.

This PR is now only the Analog devices handling the range value defaulting at 100%

In some rare instances, the patch manager is not able to find a control nca, fallback to the previous method of parsing a control nca through the loader if this occurs.

Previously NAND/SDMC installed titles would open device saves when they are supposed to be user saves. This is due to the control nca not being read and thus returns 0 for both GetDefaultNormalSaveSize() and GetDeviceSaveDataSize(). Fix this by utilizing the patch manager to read the control nca.

Previously the map of entries was being cleared while looping through each game directory, this resulted into all game directories except the last game dir to lose content metadata information. Fix this by clearing the entries only once.

C++20 deprecates capturing the this pointer via the '=' capture.
Instead, we replace it or extend the capture specification.

Oddly enough the scan that feeds the manual content provider is hardcoded to scan 2 nested directories deep.
This effectively rendered the scan subdirectories setting useless as the manual content provider cannot find any games located more than 2 nested directories deep.
Furthermore, this behavior causes game files to be picked up by the manual content provider even if scan subdirectories is disabled.

FIx this by utilizing the behavior described when populating the game list for populating the content provider.

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

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

This removes the setting entirely.

An empty QStringLiteral can more efficiently be replaced with an empty
QString.

Solves an issue with restoring the value upon reloading program.

Those are already found in the Filesystem tab.
They were added back to the Debug tab by mistake in the Vulkan PR.

If the user had cancelled, it would clear the text box. That behavior was sanitized underneath, but may anyways cause inconveniences.

Co-Authored-By: LC <lioncash@users.noreply.github.com>

This picks a default directory and file name. If on Windows and save-as screenshot saving is enabled, it asks the user, first defaulting to the default screenshot path, and with a default filename in the format `[title_id]_[year-mt-dy_hr-mn-sc-msc].png`. Otherwise, or on Linux for now, it simply saves a file in that directory with that file name.

This adds two options to the General -> UI tab. The first disables picking a place to save the file. The second chooses a default directory for saving screenshots.