Add actionMode property to Parallel State and ForEach State

[lsytj0413]

What would you like to be added:

There's multi state can perform multi actions, and Event、Operation state also have actionMode property to pecifies how actions are to be performed (in sequence or in parallel)，but Parallel、ForEach state doesn't have.

Why is this needed:

• To make all state with multi actions having the same behavior
• Define how action is performed in Parallel & ForEach state

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[fjtirado]

In my opinion, all actions on a parallel state branch or in a foreach statement should be sequential.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.