- add support for device dehydration v2 i.e. `org.matrix.msc3814`
- run dehydration flows after successfully recovering or creating secrets
- enable said flows based on .well-known `org.matrix.msc3814` config key
- delete previous implementation and helper methods
* Adopted the new MXLog and replaced NSLog throughout the application - vector-im/element-ios/issues/4351
* Replaced NSLog() and print() usages with MXLog.debug()
* Added swiftlint rules for NSLog(), print(), println() and os_log()
* Escape paths used to run script build phases for swiftlint and swiftgen