* make global environment variables available for pipeline substitution
* lint fixes
* global env support in cli exec; procBuilder tests
* drop GLOBAL_ prefix
* docs
* documentation typo
* Update docs/docs/20-usage/50-environment.md
as suggested by anbraten
Co-authored-by: Anbraten <anton@ju60.de>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Anbraten <anton@ju60.de>