feat(datapoints-graph): alarm event selector list for Data points graph 2.0

[jdre-c8y]

Alarm and event selector module and list component. Implementation for displaying alarms and events on graph - https://github.com/SoftwareAG/cumulocity-community-plugins/pull/28 Integration branch for selector and graph implementation- https://github.com/SoftwareAG/cumulocity-community-plugins/pull/29

n/a

Proposed changes

Feature allowing to add events and alarms to Data points graph 2.0 config, similiar to old Data points graph implementation (see screen below)

New alarm/event selector should be build in similiar manner as Datapoints selector- it should use the same 3-column layout and give suggestions based on already existing alarms/events:

Short demo of new implementation

https://github.com/SoftwareAG/cumulocity-community-plugins/assets/103751383/2168d3d7-d467-4780-9d32-1aa69a5c9a29

Types of changes

• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Improvement (general improvements like code refactoring that doesn't explicitly fix a bug or add any new functionality)
• [ ] Documentation Update (if none of the other choices apply)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Paste Link to the issue

Checklist

• [x] I have read the CONTRIBUTING doc
• [ ] I have signed the CLA (in all commits with git commit -s)
• [x] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation (if appropriate)

Further comments