Implement Mid-Workflow Recipe Addition and Control Flow Insertion

[jorgeMFS]

Add the ability to insert new operations between existing workflow steps and implement a more flexible workflow building experience.

Features needed:

1. Insert Operation UI:

• Add "+" button between existing operations
• Show compatible operations based on input/output types
• Visual feedback for insertion point

2. Control Flow Integration:

• Allow insertion of loops and conditions between operations
• Validate compatibility at insertion point
• Update workflow visualization

Technical Considerations:

• Modify the RecipePanel component to handle insertions