Feature Request: Adding Sorbet type definition to the project

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• Problem/bug report.
• Feature request.
• Request for support. Note: Please try to avoid submitting issues for support requests. Use Gitter instead.

Checklist before submitting:

• I've searched for an existing issue.
• I've asked my question on Gitter and have not received a satisfactory answer.
• I've included a complete bug report template. This step helps us and allows us to see the bug without trying to reproduce the problem from your description. It helps you because you will frequently detect if it's a problem specific to your project.
• The feature I'm asking for is compliant with the JSON:API spec.

Features:

Include this library and it's type definitions to sorbet-typed.

This project does use a lot YARD annotations should be some what easy to convert into rbi signatures by using something like Sord

Beginne damit, die YARD-Annotationen des Projekts sowie die referenzierten Ressourcen sorbet-typed und Sord zu überprüfen. Als erledigt gilt die Aufgabe, wenn die Typdefinitionen der Bibliothek in sorbet-typed enthalten sind; das Issue nennt jedoch keine bestimmten Dateien oder Tests.