Add train generation and builder for blueprints

src/bin/decode_blueprint.rs

@@ -0,0 +1,29 @@
+use base64::prelude::*;
+use clap::Parser;
+use factorio_blueprint::blueprint::{decode, encode};
+use std::path::PathBuf;
+
+#[derive(Debug, Parser)]
+struct Args {
+    filename: PathBuf,
+    #[arg(short, long)]
+    encode: bool,
+}
+
+fn main() {
+    let args = Args::parse();
+
+    let s = std::fs::read_to_string(args.filename).unwrap();
+
+    if args.encode {
+        let j: serde_json::Value = serde_json::from_str(&s).unwrap();
+        let d = encode(&serde_json::to_string(&j).unwrap());
+        println!("{}", d);
+    } else {
+        let d = decode(&s);
+
+        let j: serde_json::Value = serde_json::from_str(&d).unwrap();
+
+        println!("{}", serde_json::to_string_pretty(&j).unwrap());
+    }
+}