Double precision kinematic functors

Franklin Merge Request

Adds some double precision kinematic functors.

🧪 Testing

• Are all the builds successful? e.g. Franklin pipeline passed
• Have you tested in AP using the unreleased Franklin build?
• Add link to test AP here: lhcb-datapkg/AnalysisProductions!3731 (merged)

📚 Good Practise

• Have you filled out the RELEASE_NOTES.md?

📧 Contact

For questions, feel free to tag us in the merge request or use the Franklin mattermost channel for general questions! When ready for merge then assign us as reviewers, if all looks good we will merge. Try not to assign us as reviewers until you are ready for review!

🔔 Shorter Diff Link

A link to a diff showing only your changes: 837b3bd3..b93b2096

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