add simple rust "script" to build platform binaries

platform/src/main.rs

@@ -0,0 +1,16 @@
+use std::{fs::File, path::Path};
+use std::io::prelude::*;
+
+use anyhow::Result;
+
+fn main() -> Result<()> {
+    uw8_tool::BaseModule::create_binary(&Path::new("target/base.upk"))?;
+
+    let loader = curlywas::compile_file("src/loader.cwa")?;
+    File::create("bin/loader.wasm")?.write_all(&loader)?;
+
+    let platform = curlywas::compile_file("src/platform.cwa")?;
+    File::create("bin/platform.uw8")?.write_all(&platform)?;
+
+    Ok(())
+}