Add types

[Charanor]

Hello! I'm really enjoying this library, since I need dynamic tabs in many projects. However it would be nice to have some typedefinitions. If there are typedefinitions please tell me how to access them since npm install @types/react-native-dynamic-tab-view does not exist :)

[yeswanth]

Thanks @Charanor for this issue. Would you like to contribute to this project and add types?