Merge branch '19-improve-modularity-of-code' into 'dev'

src/components/Auth/ChoseRole/ChoseRole.style.ts

src/components/Auth/ChoseRole/ChoseRole.tsx

src/components/Auth/ChoseRole/ChoseRolePage.tsx

src/components/Dashboard/ProfilePage/ProfilePage.style.ts

src/components/Dashboard/ProfilePage/ProfilePage.tsx

src/components/Dashboard/ReservationPage/ReservationPage.tsx

src/components/Utils/Header.style.ts

src/components/Utils/Header.tsx

src/hooks/useRoleList.ts