Refactor(client, extension, setting): Extension/client communication 로직 추상화 및 연결 공통 상수 패키지 추가#311

constantly-dev merged 8 commits intodevelopPinback-Team/pinback-client:developfrom

refactor/#310/client-axios-instance-refactoringPinback-Team/pinback-client:refactor/#310/client-axios-instance-refactoringCopy head branch name to clipboard