fix: Correctly skip merged_crd generation

This also adds a test to validate that the relevant code is not
generated of the skip option is set.

Author: Techassi

crates/stackable-versioned-macros/fixtures/inputs/k8s/skip.rs

@@ -0,0 +1,22 @@
+#[versioned(
+    version(name = "v1alpha1"),
+    version(name = "v1beta1"),
+    version(name = "v1"),
+    k8s(
+        group = "stackable.tech",
+        singular = "foo",
+        plural = "foos",
+        namespaced,
+        skip(merged_crd)
+    )
+)]
+// ---
+#[derive(Clone, Debug, serde::Deserialize, serde::Serialize, schemars::JsonSchema)]
+pub struct FooSpec {
+    #[versioned(
+        added(since = "v1beta1"),
+        changed(since = "v1", from_name = "bah", from_type = "u16")
+    )]
+    bar: usize,
+    baz: bool,
+}

crates/stackable-versioned-macros/fixtures/snapshots/[email protected]

@@ -266,7 +266,7 @@ impl Struct {
         version: &VersionDefinition,
     ) -> Option<(IdentString, String, TokenStream)> {
         match &self.common.options.kubernetes_options {
-            Some(_) => {
+            Some(options) if !options.skip_merged_crd => {
                 let enum_variant_ident = version.inner.as_variant_ident();
                 let enum_variant_string = version.inner.to_string();
 
@@ -280,7 +280,7 @@ impl Struct {
 
                 Some((enum_variant_ident, enum_variant_string, merge_crds_fn_call))
             }
-            None => None,
+            _ => None,
         }
     }