Add support to exporting renamed Title columns to a PnP template

[jackpoz]

Add support to exporting renamed Title columns to a PnP template by not excluding the field when generating a template.
The Title will be included as a FieldRef like below

<pnp:FieldRefs>
    <pnp:FieldRef ID="fa564e0f-0c70-4ab9-b863-0177e6ddd247" Name="Title" Required="true" DisplayName="Renamed title" />
</pnp:FieldRefs>

The field changes are already applied by the provisioning engine so no changes are required there.

I have found some old discussions about this change with different opinions. I hope it will be considered as a good addition.

[jackpoz]

Today I found out that this also fixes applying a template with a calculated column that references a renamed Title, where before it was throwing an exception "Your formula is referencing an invalid column" (formulas use the DisplayName)

[anthonywhite]

@jackpoz @jansenbe guess this will mean my suggestion #331 can also be closed? 🙂

[jackpoz]

I would say so as it implements it