Add typescript support

[anubhav-sl]

Getting this error : Could not find a declaration file for module 'react-native-otp-textinput'. 'C:/Users/Anubhav/booknav-frontend/node_modules/react-native-otp-textinput/index.js' implicitly has an 'any' type. Try npm i --save-dev @types/react-native-otp-textinputif it exists or add a new declaration (.d.ts) file containingdeclare module 'react-native-otp-textinput';ts(7016)