Fixes/upgrades

protocol/mizan-codegen/templates/pydantic_to_rust/enum.rs.j2

@@ -0,0 +1,7 @@
+#[derive({% for d in derives %}{% if !loop.first %}, {% endif %}{{ d }}{% endfor %})]
+#[serde(rename_all = "snake_case")]
+pub enum {{ name }} {
+{% for v in variants %}{% if v.is_default %}    #[default]
+{% endif %}    {{ v.ident }},
+{% endfor %}}
+

protocol/mizan-codegen/templates/pydantic_to_rust/schema.rs.j2

@@ -0,0 +1,2 @@
+{{ header }}{% for block in blocks %}{{ block }}{% if !loop.last %}
+{% endif %}{% endfor %}