feat: helper function and constants for each component

[scottd018]

We should export the Kind as a constant, also in the apis/<VERSION>/<COMPONENT>_types.go file. This will allow you to use the Kind without hard-coding the kind as a string.

const CertificatesComponentKind = "CertificatesComponent"

Additionally, it would be helpful to create helper methods to create a new object, in memory for each component that we generate in the apis/<VERSION>/<COMPONENT>_types.go file.

Consider the following:

	certComponent := &platformv1alpha1.CertificatesComponent{
		TypeMeta: metav1.TypeMeta{
			Kind: "CertificatesComponent",
			APIVersion: platformv1alpha1.GroupVersion.String(),
		},
		ObjectMeta: metav1.ObjectMeta{
			Name: destination.Name,
		},
	}

Could be a helper function (NOTE: Kind logic assumes the above constant has been implemented):

func NewCertificatesComponent(name, namespace string) *CertificatesComponent {
	return &CertificatesComponent{
		TypeMeta: metav1.TypeMeta{
			Kind: CertificatesComponentKind,
			APIVersion: platformv1alpha1.GroupVersion.String(),
		},
		ObjectMeta: metav1.ObjectMeta{
			Name: destination.Name,
		},
	}
}

Which could be consumed with:

certComponent := v1alpha1.NewCertificatesComponent("my-cert", "")