Add support for invoking property expressions in resource configuration

[Gijsreyn]

PR Summary

This pull request implements support for evaluating expressions in resource properties during copy operations. Previously, while copy count could use expressions, properties within copied resources were not evaluated per iteration, preventing users from using functions like copyIndex() within property values.

PR Context

Fix #1179.

Users can now use:

resources:
- name: "[format('Server-{0}', copyIndex())]"
  copy:
    name: testLoop
    count: 3
  type: Microsoft.DSC.Debug/Echo
  properties:
    output: "[format('Port-{0}', copyIndex())]"

[emelybeaute-ops]

Plan_Meta_Ads_Ciluxe.csv