Load ASI recursive in scripts

[sndth]

My PR introduces the ability to load ASI plugins recursively from the scripts/plugins/update directories and adds the option to enable this feature in the global.ini file (it is disabled by default). This allows for better organization of the plugin folder, but only when the LoadFromScriptsRecursive variable is set to 1.

Simple presentation:

I want to load several plugins that belong to a modification called MySuperMod, so I create a MySuperMod folder in scripts/plugins/update and then place several ASI plugins there. This way, I know that in case of inconsistent plugin names, we can easily find them.

It doesn't matter whether LoadFromScriptsRecursive is set to 0 or 1, the plugins located in scripts/plugins will still be loaded, which is obvious.

[CookiePLMonster]

The final character before the null character must be a backslash (''). If you don't specify the backslash, then it will be added for you. Therefore, specify >MAX_PATH-2 characters for the path unless you include the trailing backslash; in which case, specify MAX_PATH-1 characters for the path.

This concatenation is then not necessary.

[sndth]

Indeed! I was confused by the original input, such as scripts\\, being passed as an argument to SetCurrentDirectoryW.

[ThirteenAG]

Don't forget to add error handling and symlinks like here:

Ultimate-ASI-Loader/source/dllmain.cpp

Lines 99 to 101 in 486c47c

	std::error_code ec;
	constexpr auto perms = std::filesystem::directory_options::skip_permission_denied | std::filesystem::directory_options::follow_directory_symlink;
	for (const auto& it : std::filesystem::recursive_directory_iterator(path, perms, ec))

Also, if this doesn't break anything, perhaps better to leave it enabled by default.
And maybe rename options to something like

LoadFromFromRoot=1
LoadRecursively=1

[sndth]

Don't forget to add error handling and symlinks like here:

Ultimate-ASI-Loader/source/dllmain.cpp

Lines 99 to 101 in 486c47c

	std::error_code ec;
	constexpr auto perms = std::filesystem::directory_options::skip_permission_denied | std::filesystem::directory_options::follow_directory_symlink;
	for (const auto& it : std::filesystem::recursive_directory_iterator(path, perms, ec))

Also, if this doesn't break anything, perhaps better to leave it enabled by default. And maybe rename options to something like

LoadFromFromRoot=1
LoadRecursively=1

I made changes that fulfill the requests! I'm not entirely sure what the LoadFromFromRoot option refers to, but I think it's almost everything now.

[ThirteenAG]

I just meant as a replacement for LoadFromScriptsOnly, though probably not worth to do it right now, as I'm not sure what the backwards compatibility impact might be.

[sndth]

So that's probably it!