Add support for other flight related APIs

[tsolakoua]

The APIs can be found at https://developers.amadeus.com/self-service/category/air

• Add support for Flight Availabilities Search
• Add support for Branded Fares Upsell
• Add support for Flight Price Analysis
• Add support for Flight Delay Prediction
• Add support for Airport on-time performance
• Add support for Flight Choice Prediction
• Add support for On-demand flight status