pntr: Enable UTF-8 support

[RobLoach]

This enables UTF-8 characters for the default amount of glyphs. For CJK characters, we'd need to use a font that has them.

[JesseTG]

Thanks for working on this! Could you please retarget this against dev instead of main?

[RobLoach]

Merged the PR 👍

Of course, I wouldn't recommend using PNTR_ENABLE_UTF8 until you actually need it.

[JesseTG]

Merged the PR 👍

Of course, I wouldn't recommend using PNTR_ENABLE_UTF8 until you actually need it.

I look forward to giving it a whirl as soon as I'm ready to. Thanks Rob, I appreciate it a lot.

[RobLoach]

Restore the original characters, instead of the demo ones.

Suggested change

	static constexpr const char* const ERROR_TITLE = u8"Oh no! Добрий день!";
	static constexpr const char* const SOLUTION_TITLE = u8"Here's do: 修复方法";
	static constexpr const char* const THANK_YOU = u8"Thank you 谢谢您";
	static constexpr const char* const ERROR_TITLE = "Oh no! melonDS DS couldn't start...";
	static constexpr const char* const SOLUTION_TITLE = "Here's what you can do:";
	static constexpr const char* const THANK_YOU = "Thank you for using melonDS DS!";