Merge player emu

[jprjr]

Hi, this is an alternative to #68 - since it's not possible to use vgm-player without vgm-emu, it may make sense to just include vgm-emu in archives and dlls of vgm-player. The benefit of this approach is existing builds should continue to work, or worst-case, they just need to remove vgm-emu from their library lists, if they're using vgm-player.

This also fixes the issue I mentioned of simultaneously linking against libgme (as long as this is built with symbolic linking flags).

[ValleyBell]

Due to how I intend to have stuff linked (link vgm-player when using anything from the player, link vgm-emu when you explicitly use anything from emu), I prefer going with the approach from #68.

I consider linking both, vgm-emu and vgm-player perfectly valid and intentional, so this PR is a no-go for me.