Nexus publish

[DariusIMP]

• Adding the Nexus Publish Plugin to gradle for the publishing processes
• Modifying the workflows to use the nexus publish tasks
• Modifying the workflows also to allow to manually trigger either the github publication or the maven publication or both by enabling or disabling them from the actions panel:
  

[github-actions]

PR missing one of the required labels: {'documentation', 'enhancement', 'breaking-change', 'internal', 'dependencies', 'new feature', 'bug'}

[github-actions]

PR missing one of the required labels: {'internal', 'new feature', 'enhancement', 'bug', 'breaking-change', 'dependencies', 'documentation'}