feat(chat): 채팅방 목록 API와 저장소를 추가한다

app/src/main/java/kr/co/vividnext/sodalive/v2/main/chat/data/ChatRoomApi.kt

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+package kr.co.vividnext.sodalive.v2.main.chat.data
+
+import io.reactivex.rxjava3.core.Single
+import kr.co.vividnext.sodalive.common.ApiResponse
+import retrofit2.http.GET
+import retrofit2.http.Header
+import retrofit2.http.Query
+
+interface ChatRoomApi {
+    @GET("/api/v2/chat/rooms")
+    fun getChatRooms(
+        @Header("Authorization") authHeader: String,
+        @Query("filter") filter: String,
+        @Query("cursor") cursor: String?
+    ): Single<ApiResponse<ChatRoomListPageResponse>>
+}

app/src/main/java/kr/co/vividnext/sodalive/v2/main/chat/data/ChatRoomRepository.kt

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+package kr.co.vividnext.sodalive.v2.main.chat.data
+
+import io.reactivex.rxjava3.core.Single
+import kr.co.vividnext.sodalive.common.ApiResponse
+
+class ChatRoomRepository(private val api: ChatRoomApi) {
+    fun getChatRooms(
+        token: String,
+        filter: String,
+        cursor: String?
+    ): Single<ApiResponse<ChatRoomListPageResponse>> = api.getChatRooms(
+        authHeader = token,
+        filter = filter,
+        cursor = cursor
+    )
+}