Fix bug/clear chat

[andhikayuana]

clear chats (clear room comments)

ArrayList<Integer> roomIds = new ArrayList<>();
roomIds.add(qiscusChatRoom.getId());
QiscusApi.getInstance()
    .clearChatRoomMessages(roomIds)
    .subscribeOn(Schedulers.io())
    .observeOn(AndroidSchedulers.mainThread())
    .subscribe(aVoid -> {
        //todo your implementation
    }, e -> {
        //todo your implementation
    });

[codecov[bot]]

Codecov Report

Merging #42 into develop will not change coverage. The diff coverage is 0%.

@@           Coverage Diff           @@
##           develop     #42   +/-   ##
=======================================
  Coverage        0%      0%           
=======================================
  Files          127     127           
  Lines        10125   10136   +11     
  Branches      1046    1046           
=======================================
- Misses       10125   10136   +11

Impacted Files	Coverage Δ
...ain/java/com/qiscus/sdk/data/remote/QiscusApi.java	0% <0%> (ø)	:arrow_up:

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