Okay, so here's the status of the Gold Pack (Base Game + Expansion) for Star Wars : Empire at War and it's Expansion, known as Forces of Corruption, as of Crossover 24. Steam involves having a Steam Bottle which was installed as Windows 10, 64-bit.
Installing the GOG.com version of the Gold Pack for Star Wars Empire at War is similar, install as a Windows 10, 64-bit bottle for the game installer provided by GOG.com
The result should be a smooth running game at 4 or 5 out of 5 stars for compatibility