feat(ui): 채팅 탭 추가

app/src/main/java/kr/co/vividnext/sodalive/chat/ChatFragment.kt

@@ -0,0 +1,18 @@
+package kr.co.vividnext.sodalive.chat
+
+import android.os.Bundle
+import android.view.View
+import kr.co.vividnext.sodalive.base.BaseFragment
+import kr.co.vividnext.sodalive.databinding.FragmentChatBinding
+
+class ChatFragment : BaseFragment<FragmentChatBinding>(FragmentChatBinding::inflate) {
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        initView()
+    }
+
+    private fun initView() {
+        // 채팅 화면 초기화 로직
+    }
+}