[FEATURE] Allow copy - paste the whole branch

**Is your feature request related to a problem? Please describe.**
The customer is building a workflow that has several branches and he need to be able to clone the complete branch downline structure to each of the remaining branches.

See this loom video: https://www.loom.com/share/862ca3fd2a5040cba6641e20fe2328ea?sid=d35c3d9d-d6b6-4bc8-aa6d-acc2009b8c61

**Describe the solution you'd like**
Add the feature to clone the whole branch to another branch

**Do you have a workaround?**
Manually copy - paste each step

**Additional context**
Raised by a customer here: https://pipedream-users.slack.com/archives/CPTJYRY5A/p1733963743191289