CI: move grafana-build into pkg/build (#105640)

* move grafana-build into pkg/build

pkg/build/daggerbuild/artifacts/parse_args_test.go

@@ -0,0 +1,38 @@
+package artifacts_test
+
+// var TestArtifact struct {
+// }
+//
+// func TestParse(t *testing.T) {
+// 	v := "artifact:flag1:flag2"
+//
+// 	exampleArtifact := &pipeline.Artifact{
+// 		Name: "example",
+// 	}
+//
+// 	argument1 := &pipeline.Argument{
+// 		Name: "argument1",
+// 	}
+//
+// 	argument2 := &pipeline.Argument{
+// 		Name: "argument2",
+// 	}
+//
+// 	res, err := artifacts.Parse(v, map[string]artifacts.ArgumentOption{
+// 		"artifact":  {Artifact: exampleArtifact},
+// 		"argument1": {Arguments: []*pipeline.Argument{argument1}},
+// 		"argument2": {Arguments: []*pipeline.Argument{argument2}},
+// 	})
+//
+// 	if err != nil {
+// 		t.Fatal(err)
+// 	}
+//
+// 	if res.Artifact.Name != exampleArtifact.Name {
+// 		t.Fatal("Parse should return the example artifact")
+// 	}
+//
+// 	if len(res.Arguments) != 2 {
+// 		t.Fatal("Parse should return 2 Arguments")
+// 	}
+// }