[NAB-359] Task ref with multiple init values

[camperko]

Description

Add option to select multiple init transitions for taskRef field. Transitions are picked from sorted list and saved as chips.

Implements NAB-359 NAB-371

Dependencies

Requires petri.svg 1.1.1 and petriflow.svg 1.1.1

Third party dependencies

No new dependencies were introduced

Blocking Pull requests

There are no dependencies on other PR

How Has Been This Tested?

Manually tested in builder.

Name	Tested on
OS	Linux Mint 21
Runtime	Node 20.13.1
Dependency Manager	npm 10.8.0
Framework version	Angular 13.3.1
Run parameters
Other configuration

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• My changes have been checked, personally or remotely, with @mazarijuraj
• I have commented my code, particularly in hard-to-understand areas
• I have resolved all conflicts with the target branch of the PR
• I have updated and synced my code with the target branch
• I have added tests that prove my fix is effective or that my feature works
• New and existing tests pass locally with my changes:
  • Lint test
  • Unit tests
  • Integration tests
• I have checked my contribution with code analysis tools:
  • SonarCloud
  • Snyk
• I have made corresponding changes to the documentation:
  • Developer documentation
  • User Guides