Adds ability to render file/folder name field in DynamicForm and Field. Closes #1683

[martinlingstuyl]

Q	A
Bug fix?	[x]
New feature?	[ ]
New sample?	[ ]
Related issues?	fixes #1683

What's in this Pull Request?

This PR contains the code necessary to render the FileLeafRef field when using a DynamicForm or DynamicField.

I tested this using a Document Set Form:

<DynamicForm
  context={this.props.context}
  contentTypeId='0x0120D52000796BC7FCC8B819488729FB2B77B0E799002B2379630DCCB04D883603B763E843D7'
  listId={this.props.context.list.guid.toString()}
  listItemId={this.props.context.itemId}
  onListItemLoaded={async (listItemData: any) => { // eslint-disable-line @typescript-eslint/no-explicit-any
    console.log(listItemData);
  }} />

Important: I was not able to test the DynamicForm on a File, I didn't get it to work without a generic SharePoint error when loading SPListForm.aspx. Maybe you guys have a way to test that scenario....?

Note on loading the list item

The FileLeafRef field is not loaded by default when calling the SharePoint REST API, so I included an extra select statement: .select("*", "FileLeafRef").

[michaelmaillot]

Merged manually, thanks for your help @martinlingstuyl!

Regarding tests on SPListForm, I could make it work with our form customizer included in the repo. enableFileSelection had to be enabled.