Kinds: Generate k8 resources without use kindys/thema (#83310)

Generate k8 resources reading cue file directly instead of use thema/kindsys binding

pkg/codegen/tmpl/core_metadata.tmpl

@@ -0,0 +1,33 @@
+package {{ .PackageName }}
+
+import (
+	"time"
+)
+
+// Metadata defines model for Metadata.
+type Metadata struct {
+	CreatedBy         string     `json:"createdBy"`
+	CreationTimestamp time.Time  `json:"creationTimestamp"`
+	DeletionTimestamp *time.Time `json:"deletionTimestamp,omitempty"`
+
+	// extraFields is reserved for any fields that are pulled from the API server metadata but do not have concrete fields in the CUE metadata
+	ExtraFields     map[string]any    `json:"extraFields"`
+	Finalizers      []string          `json:"finalizers"`
+	Labels          map[string]string `json:"labels"`
+	ResourceVersion string            `json:"resourceVersion"`
+	Uid             string            `json:"uid"`
+	UpdateTimestamp time.Time         `json:"updateTimestamp"`
+	UpdatedBy       string            `json:"updatedBy"`
+}
+
+// _kubeObjectMetadata is metadata found in a kubernetes object's metadata field.
+// It is not exhaustive and only includes fields which may be relevant to a kind's implementation,
+// As it is also intended to be generic enough to function with any API Server.
+type KubeObjectMetadata struct {
+	CreationTimestamp time.Time         `json:"creationTimestamp"`
+	DeletionTimestamp *time.Time        `json:"deletionTimestamp,omitempty"`
+	Finalizers        []string          `json:"finalizers"`
+	Labels            map[string]string `json:"labels"`
+	ResourceVersion   string            `json:"resourceVersion"`
+	Uid               string            `json:"uid"`
+}