[workflow] Add Phi-4 Finetuning Example

[rajithkrishnegowda]

Summary:
This PR is adding Phi-4 Finetuning workflow Example

Details:

• Implemented the phi-4 algorithm to improve model aggregation and performance than phi-3 algorithm
• Added gradio interface which is supported in phi-4 algorithm for feature enhances interactivity

[MasterSkepticista]

• Why exactly do we need Gradio? How is it related to an FL tutorial?
• The PR description/title is misleading. Please rename as "[workflow] Add Phi-4 Finetuning Example"
• Consider asking the user to run fx experimental activate after installing OpenFL. This need not be part of the notebook execution cells.

[rajithkrishnegowda]

• Why exactly do we need Gradio? How is it related to an FL tutorial?
• The PR description/title is misleading. Please rename as "[workflow] Add Phi-4 Finetuning Example"
• Consider asking the user to run fx experimental activate after installing OpenFL. This need not be part of the notebook execution cells.

1. Gradio is a user-friendly interface that simplifies the interaction with machine learning models. I have added a Federated Learning (FL) tutorial that allows users to input and submit the number of rounds for federated learning. This feature enhances interactivity and helps users better understand the iterative nature of federated learning.
2. Changed the PR description/title
3. added a note section for user to install openfl iv pip install -U openfl and to run fx experimental activate

[MasterSkepticista]

1. I have added a Federated Learning (FL) tutorial that allows users to input and submit the number of rounds for federated learning. This feature enhances interactivity and helps users better understand the iterative nature of federated learning.

• For (1), my recommendation is to remove gradio and the interactive element (if this existed for older notebooks, I suggest updating them too). A notebook interface is interactive enough. IMO adding GUI is out-of-place for a fine-tuning example. Furthermore, we really want to reduce the amount of version maintenance we do.
• For (3), my suggestion was to actually not install openfl in the notebook. It is expected that the user has already installed OpenFL by the time they clone the repository. It is perhaps the first thing they are expected to do. In this (and all other) notebooks, a markdown cell can point the user to installation page on official docs and then the step to activate experimental APIs. Installing any packages specific to the notebook is fine, though.

[psfoley]

1. I have added a Federated Learning (FL) tutorial that allows users to input and submit the number of rounds for federated learning. This feature enhances interactivity and helps users better understand the iterative nature of federated learning.

• For (1), my recommendation is to remove gradio and the interactive element (if this existed for older notebooks, I suggest updating them too). A notebook interface is interactive enough. IMO adding GUI is out-of-place for a fine-tuning example. Furthermore, we really want to reduce the amount of version maintenance we do.
• For (3), my suggestion was to actually not install openfl in the notebook. It is expected that the user has already installed OpenFL by the time they clone the repository. It is perhaps the first thing they are expected to do. In this (and all other) notebooks, a markdown cell can point the user to installation page on official docs and then the step to activate experimental APIs. Installing any packages specific to the notebook is fine, though.

1. Agree on this point. I'm personally a fan of gradio - and it would be useful to show in potentially other dedicated notebooks how other higher level interfaces can be built on top of the Workflow API, but in this notebook we want the focus to be LLM usage.
2. OpenFL indeed should be installed ahead of time. workflow_interface_requirements.txt is only kept as separate for now because this is an experimental package. These will eventually be merged into the requirements of setup.py once the experimental label for the Workflow API is dropped. Installing packages needed for a particular notebook example is standard practice.

[rajithkrishnegowda]

1. I have added a Federated Learning (FL) tutorial that allows users to input and submit the number of rounds for federated learning. This feature enhances interactivity and helps users better understand the iterative nature of federated learning.

• For (1), my recommendation is to remove gradio and the interactive element (if this existed for older notebooks, I suggest updating them too). A notebook interface is interactive enough. IMO adding GUI is out-of-place for a fine-tuning example. Furthermore, we really want to reduce the amount of version maintenance we do.
• For (3), my suggestion was to actually not install openfl in the notebook. It is expected that the user has already installed OpenFL by the time they clone the repository. It is perhaps the first thing they are expected to do. In this (and all other) notebooks, a markdown cell can point the user to installation page on official docs and then the step to activate experimental APIs. Installing any packages specific to the notebook is fine, though.

changes made in 6ebb95e