Add scripting VIs to Set Parameter Definitions and Set Default Word

[dbendele]

• [x] This contribution adheres to CONTRIBUTING.md.

What does this Pull Request accomplish?

Adds Set* functionality to the scripting library.

Why should this Pull Request be merged?

Set Parameter Definition and other Set* functionality enables modification of existing parameters within the system definition.

What testing has been done?

New automated unit tests added for Get and Set pairs for parameter definitions and for default word.

[dbendele]

This review depends on successful merge of #77

[dbendele]

The following source VIs are ready for review as part of this PR:

• Set Parameter Definition.vi
  • Set Parameter Bit Encoding.vi
  • Set Parameter Scaling.vi
• Set Default Word.vi

and the associated tests:

• test Get-Set-Get Parameter Definitions.vi
• test Get-Set-Get Default Word Value.vi

[dbendele]

• [ ] @buckd, please confirm that 'Default word' from the template is intended to replace 'WordInitialRawValue' from the released CD.