create sdk dir

src/sdk/output/rust.rs

@@ -443,6 +443,7 @@ impl {name} {{
 }
 
 pub fn generate_sdk_to_tmp(sdk: &Sdk) -> anyhow::Result<()> {
+    std::fs::create_dir_all("z:/tmp/ark_sdk/")?;
     let file = std::fs::File::create("z:/tmp/ark_sdk/mod.rs")?;
     let mut writer = BufWriter::new(file);