client: implement in-game hints support (autohelp)

[Vladislav4KZ]

My first attempt at reverse engineering...

[Vladislav4KZ]

Currently, the autohelp text may be "typed out" more slowly when multibyte characters are used.

For example, when the game uses English language, the timings match. When it uses Russian, the text is typed more slowly, and the text holdtime is longer.

In the original CS 1.6, the timings are the same for all text, both for single-byte and multibyte characters.

[Velaron]

I like to take function signatures directly from the debug info, same with parameter names. It's easier to compare later then. Even if the parameter is unused I keep it for convenience.

ex: int CHudMessage::MessageAdd(const char *pName, float time, int hintMessage, unsigned int font)

hintMessage might even be a qboolean (a typedef to int) here, seems to be used as a bool

[Vladislav4KZ]

I’ve redone it, take a look.