feat(i18n): 라이브 룸 하드코딩 문구를 I18n 키로 통일한다

SodaLive/Sources/Live/Room/Dialog/LiveRoomDonationMessageItemView.swift

@@ -16,7 +16,7 @@ struct LiveRoomDonationMessageItemView: View {
     var body: some View {
         HStack(alignment: .top, spacing: 0) {
             VStack(alignment: .leading, spacing: 8) {
-                Text("\(message.nickname)님이")
+                Text("\(message.nickname)\(I18n.LiveChat.donationMemberSuffix)")
                     .appFont(size: 13.3, weight: .medium)
                     .foregroundColor(.white)