flutter_bugfender 1.0.0

Flutter plugin to enable Bugfender reporting (with Java and Swift support).

[1.0.0] - Swift support - breaking change

• replaced iOS SDK with Swift supported pod
• replaced example with iOS Swift project

[0.0.5] - minor fixes

• added environment variable in pubspec.yaml (to be compatible with latest the flutter version)
• added ObjC dependency in podspec (in order for the iOS side to work)
• removed manual BugfenderSDK pod version number override (to pull the latest automatically, currently 1.6.3 instead 1.5.2)