feature/add impl (#6)

* format code

* with object gen and args

* add implementation

* add rust generator

* reset generated code

* add basic output

* reset output

* add object

* add format function

* with opts

* fix vec

* add context to unwrap

* fix arguments

* with function body

* first complete generation: Still missing Vec<Obj>

* run full alpine

* add roadmap item

crates/dagger-codegen/src/rust/templates/scalar_tmpl.rs

@@ -0,0 +1,16 @@
+use dagger_core::introspection::FullType;
+use genco::prelude::rust;
+use genco::quote;
+
+use crate::rust::functions::format_name;
+use crate::utility::OptionExt;
+
+pub fn render_scalar(t: &FullType) -> eyre::Result<rust::Tokens> {
+    let deserialize = rust::import("serde", "Deserialize");
+    let serialize = rust::import("serde", "Serialize");
+
+    Ok(quote! {
+        #[derive($serialize, $deserialize)]
+        pub struct $(t.name.pipe(|n|format_name(n)))(String);
+    })
+}