feat: with variable

Signed-off-by: kjuulh <contact@kjuulh.io>

rust-service/crates/%%name%%/src/main.rs

@@ -45,5 +45,5 @@ async fn main() -> anyhow::Result<()> {
 }
 
 async fn root() -> &'static str {
-    "Hello, Service!"
+    "Hello, %%name%%!"
 }