add premake5 build script

[izarif]

I understand that the SDK can be built with CMake or Waf, but the more options the better, right? The script contains only two build configurations (Debug and Release), tested only on Linux and the build with LTO does not work correctly (despite the presence of the --lto command line option).

[mittorn]

With hard-coded filelists we cannot support different build systems. cmake still here only because it was used in old engine

[nekonomicon]

but the more options the better, right?

Nope.
Who will update file lists and build options for all existing branches?

#105

[izarif]

Who will update file lists and build options for all existing branches?

I didn't think of that, but premake supports file lists with wildcards. Is it necessary to support all branches? Can the script be kept only for the master branch?

[a1batross]

Dude, I understand what you wanna say but we decided to not spawn another build system because we supported like seven different build scripts in old engine and it was a big headache.

HLSDK is more of exception because existing modders who use this as a base used CMake so it's still there.

If you wanna keep it for yourself, put it in contrib/iZarif directory so it'll not confuse random strangers who would like to use premake but something is broken, so they'll attach a bug but nobody except you is able to fix it.

[izarif]

If you wanna keep it for yourself, put it in contrib/iZarif directory

Moved

[a1batross]

I'm fine with that.

What do you think @nekonomicon ? If ok, then merge it