reduce learning curve by removing unnecessary wrappers

[carocad]

This PR promotes the use of Clojure and Datascript api instead of our own to solve common tasks.

• pull removed -> use datascript pull
• q removed -> use datascript q
• entity removed -> use datascript entity
• inject removed -> use assoc and q

fixes #103 -> expose only reactive functions and rely on Datascript for the rest

[mehdisadeghi]

:shipit: This branch has been deployed to: https://expo.io/@carocad/hive?release-channel=data

Download the Expo app and scan this QR code to get started!

[mehdisadeghi]

:shipit: This branch has been deployed to: https://expo.io/@carocad/hive?release-channel=data

Download the Expo app and scan this QR code to get started!

[mehdisadeghi]

:shipit: This branch has been deployed to: https://expo.io/@carocad/hive?release-channel=data

Download the Expo app and scan this QR code to get started!