Explicitly set working directory to executable directory on boot

[DeaTh-G]

Fixes #1271.

[blueskythlikesclouds]

Should add a cmd option to bypass this for development purposes.

[DeaTh-G]

Should add a cmd option to bypass this for development purposes.

Done, --use-cwd now allows to do that.

[DarioSamo]

@blueskythlikesclouds Does this change fix the D3D12 Agility SDK not being found if ran from the search menu? What's the logic behind the loading of the Agility SDK? Does it wait for the backend to be attempted to be created first or does it attempt to load it on its own before we reach main()?

[blueskythlikesclouds]

@blueskythlikesclouds Does this change fix the D3D12 Agility SDK not being found if ran from the search menu? What's the logic behind the loading of the Agility SDK? Does it wait for the backend to be attempted to be created first or does it attempt to load it on its own before we reach main()?

As far as I know it's delayed to when the device gets created. I can make a test to confirm the behavior.

[blueskythlikesclouds]

Did a test, it still loads the D3D12Core.dll located in executable folder after changing the working directory.