feature/1461 add new option --purge and --no-purge to createDeltaPkg, build, buildDefinition, buildDefinitionBulk

[JoernBerkefeld]

PR details

What changes did you make? (Give an overview)

• closes [FEATURE] --purge flag for buildDefinition, buildDefinitionBulk, build and createDeltaPkg #1461

Further details (optional)

...

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• test scripts updated
• Wiki updated (TODO)

[github-actions]

Coverage Report

Commit:5cc31b1
Base: develop@6af98d8

Type	Base	This PR
Total Statements Coverage	70.71%	70.7%  (-0.01%)
Total Branches Coverage	69.53%	69.63%  (+0.1%)
Total Functions Coverage	83.23%	83.23%  (+0%)
Total Lines Coverage	70.71%	70.7%  (-0.01%)

Details (changed files):

File	Statements	Branches	Functions	Lines
lib/cli.js	0%	0%	0%	0%
lib/index.js	72.85%	67.33%	75%	72.85%
lib/metadataTypes/MetadataType.js	83.65%	80.5%	76.82%	83.65%
lib/util/devops.js	16.1%	100%	25%	16.1%
lib/util/util.js	86.09%	75.64%	93.02%	86.09%