[WIP]Falcon : Batch Normalization.

[rasswanth-s]

Description

Implementation of Falcon Batch Normalization . resolves #153

How has this been tested?

• [ ] WIP Tests

Checklist

• [x] I have followed the Contribution Guidelines and Code of Conduct
• [x] I have commented my code following the OpenMined Styleguide
• [x] I have labeled this PR with the relevant Type labels
• [ ] My changes are covered by tests