Add IME keyboard layout and panel metrics support

[w1naenator]

• Introduced new header and implementation files for IME keyboard layout handling.
• Added structures for viewport metrics, keyboard grid layout, and drawing parameters.
• Implemented functions to compute viewport and panel metrics for the IME dialog.
• Enhanced the IME dialog UI to utilize the new keyboard layout and metrics.
• Updated input handling to support new keyboard interactions and layout adjustments.
• Added caret management and text normalization features in the IME dialog state.
• Improved window positioning logic to accommodate different screen resolutions.

[georgemoralis]

which games uses ime keyboard?

[w1naenator]

which games uses ime keyboard?

bloodborne, code vein, nier automata, dragon balls xenoverse 1/2 (was softlocked), diablo III, god eater 2

[DanielSvoboda]

In the game Divinity: Original Sin 2 - Definitive Edition this PR causes an error even before the game starts.
In the pre-release, it reaches the menu, but after pressing the X button, the animation loops and the menu doesn't open.

vmovdqa64 is an AVX-512 instruction, and my processor doesn't support AVX-512

[StevenMiller123]

That sounds like it's executing garbage data, could you compile locally and debug the crash?

[DanielSvoboda]

The local build works normally. I tested it both by debugging in Visual Studio and by running it through the command line.
However, the version downloaded from GitHub shows this error.
Even when testing only the SDL version from GitHub and the local SDL build, the local one works without any issues, while the GitHub version still presents this problem.
Honestly, I couldn’t figure out what is happening....

The game doesn't show any improvement with this PR. So you can disregard my comment.