Textileio React Native Sdk Versions Save

Adds Textile.files.file method

Fixes React Native bridge methods that were using long instead of Integer

Migrates to androidx and supports new versions of React Native

Update Textile dependency and fix a couple compilation errors

Updates to native sdks 2.1.0 and core 0.7.6, adding IPFS pubsub api

• Adds IPFS swarm connect method
• Updates to latest go-textile and native mobile sdks

Updates to ios-textile 2.0.10

Update ios-textile to get improvements for node lifecycle

• fixes crash on comment feedtype