Slack action for adding reaction to message

[dsd]

Is your feature request related to a problem? Please describe.
I'm looking to migrate from another solution to Activepieces. However, I am missing the ability to have an Activepieces flow add a reaction to an existing slack message.

Describe the solution you'd like
Add a new Action to the Slack piece: "React to a message"
This should allow the user to specify the slack message ID (timestamp) to respond to, and the textual name of the reaction to apply (thumbsup/slightly_smiling_face/rocket/...)

[github-actions]

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