[Feature] 콜밴 글쓰기 상태 및 뷰모델 추가#1328

JaeYoung290 wants to merge 4 commits intofeature/#1283-callvan-create-screenBCSDLab/KOIN_ANDROID:feature/#1283-callvan-create-screenfrom

feature/#1283-callvan-create-viewmodelBCSDLab/KOIN_ANDROID:feature/#1283-callvan-create-viewmodelCopy head branch name to clipboard