Add support for setting multi-value people fields in SharePoint

[Mikael_Svenson]

Currently setting single value people fields work just fine. Would be great if we could be allowed to compose the right JSON for multi value as well. Or at least support setting a single value in a multi-value field, which works just fine with the below workaround:

• Set people field to single value
• Create Flow
• Set people field to multi value

this allows setting at least one value in a multi-value people field.