refactor: move Pkl module definitions to dedicated package

pkg/dwn/gen/Dwngen.pkl.go

@@ -0,0 +1,36 @@
+// Code generated from Pkl module `dwngen`. DO NOT EDIT.
+package gen
+
+import (
+	"context"
+
+	"github.com/apple/pkl-go/pkl"
+)
+
+type Dwngen struct {
+}
+
+// LoadFromPath loads the pkl module at the given path and evaluates it into a Dwngen
+func LoadFromPath(ctx context.Context, path string) (ret *Dwngen, err error) {
+	evaluator, err := pkl.NewEvaluator(ctx, pkl.PreconfiguredOptions)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		cerr := evaluator.Close()
+		if err == nil {
+			err = cerr
+		}
+	}()
+	ret, err = Load(ctx, evaluator, pkl.FileSource(path))
+	return ret, err
+}
+
+// Load loads the pkl module at the given source and evaluates it with the given evaluator into a Dwngen
+func Load(ctx context.Context, evaluator pkl.Evaluator, source *pkl.ModuleSource) (*Dwngen, error) {
+	var ret Dwngen
+	if err := evaluator.EvaluateModule(ctx, source, &ret); err != nil {
+		return nil, err
+	}
+	return &ret, nil
+}