Starcraft Map Constant

[zuhanit]

In version 1.0.6 eps-server can suggest Starcraft Constant(ex: "Terran Marine), but can't suggest Map Constant(ex: "James" a.k.a "Terran Marine").

• Using WASM from Rust, or ffi-napi. I think handwrite MPQ Reader is bad choice. That will be reinvent the wheel. Instead, using stormdll is good for both user and developer.
• Save Map URI at config, or transfer to server by command? Maybe former is good for eps-server to remember Map.

[zuhanit]

Server can manage euddraft config in #36.

[armoha]

I think https://github.com/wc3tools/stormlib-rs is good choice for StormLib binding.