Add a page for Federated Learning Best Practices

**What topic do you wish to add?**
I would like to add page(s) related to the best practices in federated learning.
**Are there existing pages in the RDMkit website related to the requested page?**
Yes, some related pages could be:
[Data security](https://rdmkit.elixir-europe.org/data_security)
[Data sensitivity](https://rdmkit.elixir-europe.org/data_sensitivity)
[Data provenance](https://rdmkit.elixir-europe.org/data_provenance)
[Data quality](https://rdmkit.elixir-europe.org/data_quality)
[GDPR compliance](https://rdmkit.elixir-europe.org/gdpr_compliance)
[Machine Learning](https://rdmkit.elixir-europe.org/machine_learning)

**Resources**
If there are there resources that could be utilised for writing the new page, please list them below:

**Context**
If this request is coming from a particular project, domain, or use-case please list them below:
Fed-A-Crate from Elixir Science Tier