Better support for Handling Limit Adjusters and mods loading files from DllMain

[CookiePLMonster]

1. Un-hardcodes the CHandlingData array for the handling hot-reload function, now it reads the code pointer every time. This way it'll work best it can with OLA and other mods breaking the handling limits.
2. As suggested by @nta, it is possible to hook the ASI's IAT before it calls DllMain by leveraging DLL Load Notifications. They don't have publicly exposed API functions, but as evidenced, they're somewhat documented - and we're using them as conservatively as possible, bailing out on any error or a missing function. If Microsoft ever "delivers" and removes those functions, we simply fall back to the current behaviour of hooking the IAT directly after LoadLibrary.

Fixes #136. Many mods in the "incompatible" list are probably now compatible, as many of them were excluded solely because they are loading files in DllMain - but I have not verified them.

[CookiePLMonster]

III.VehicleAudioLoader.asi joined the naughty list for the same reason as the handling limit adjuster.

[CookiePLMonster]

As suggested by @nta, it is possible to hook the ASI's IAT before it calls DllMain by leveraging DLL Load Notifications. They don't have publicly exposed API functions, but as evidenced, they're somewhat documented - and we're using them as conservatively as possible, bailing out on any error or a missing function. If Microsoft ever "delivers" and removes those functions, we simply fall back to the current behaviour of hooking the IAT directly after LoadLibrary.