Added Additional Functions to prepare Composite Resource support

[PlagueHO]

Pull Request

Pull Request (PR) description

This PR adds the requisite support functions to enable Composite resource support. The actual support is not yet included as I wanted to limit the amount of change (still too much change for one PR really). Relates to #79

This Pull Request (PR) fixes the following issues

• None.

Task list

• [x] Added an entry to the change log under the Unreleased section of the file CHANGELOG.md. Entry should say what was changed and how that affects users (if applicable), and reference the issue being resolved (if applicable).
• [ ] Documentation added/updated in README.md.
• [x] Comment-based help added/updated.
• [x] Localization strings added/updated in all localization files as appropriate.
• [x] Examples appropriately added/updated.
• [x] Unit tests added/updated.
• [ ] Integration tests added/updated (where possible).
• [x] New/changed code adheres to DSC Community Style Guidelines.

@johlju - would you mind reviewing this when you have time? Once this one is through it should be a reasonably straight shot to enable composite support.

---

This change is 

[johlju]

@PlagueHO conflicting files that also needs to resolved since I merged a PR.

[codecov[bot]]

Codecov Report

Merging #83 (d524798) into main (c03c040) will increase coverage by 0%. The diff coverage is 98%.

@@        Coverage Diff         @@
##           main   #83   +/-   ##
==================================
  Coverage    97%   97%           
==================================
  Files        34    38    +4     
  Lines       802   865   +63     
==================================
+ Hits        784   846   +62     
- Misses       18    19    +1     

[johlju]

This is merged now.

[johlju]

@PlagueHO awesome work on this! 😃