feat: add leptos

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

crates/dagger-rust/src/source.rs

@@ -90,10 +90,14 @@ impl RustSource {
     ) -> eyre::Result<dagger_sdk::Directory> {
         let source = source.map(|s| s.into()).unwrap_or(PathBuf::from("."));
 
+        let mut excludes = self.exclude.clone();
+        excludes.push("**/src".to_string());
+
         let directory = self.client.host().directory_opts(
             source.display().to_string(),
             dagger_sdk::HostDirectoryOptsBuilder::default()
-                .include(vec!["**/Cargo.toml", "**/Cargo.lock"])
+                //.include(vec!["**/Cargo.toml", "**/Cargo.lock"])
+                .exclude(excludes.iter().map(|s| s.as_str()).collect::<Vec<_>>())
                 .build()?,
         );