Merge branch 'release/1.0.0'

Add README.md

trivial change(bluetoothPermissions() 수정, clear() 호출)

ci/cd script branch filter master -> main으로 수정

Example 앱 version 수정

example 앱 Java 11로 수정

Maven publish 추가

Add example app

Add Fragment 시 commit()으로 수정

ActivityResult data 파라미터 default 값 null로 설정

ACTION_SETTINGS 도메인으로 수정

trivial change (get, remove fragment 메소드 매개변수에 fragmentManager 제거)

Modify to prevent Fragment removal if there are still pending requests

Modify to throw an error if Fragment is removed during requestEach

Modify to add fragment only during the lifecycle of Observable