Creates

* UI components
  ```javascript
  import PlaybackTime from "@sendbird/uikit-react/ui/PlaybackTime"
  import ProgressBar from "@sendbird/uikit-react/ui/ProgressBar"
  import VoiceMessageInput from "@sendbird/uikit-react/ui/VoiceMessageInput"
  import VoiceMessageItemBody from "@sendbird/uikit-react/ui/VoiceMessageItemBody"
  ```
  * PlaybackTime: Display the current time in 00:00 format with the received millisecond value
  * ProgressBar: Display the current progress status with the received maxSize and currentSize of millisecond unit value
  * VoiceMessageInput: UI component for recording and playing a voice message
  * VoiceMessageItemBody: UI component for rendering a voice message also able to play voice message
* VoiceRecorder
  ```javascript
  import { VoiceRecorderProvider, useVoiceRecorderContext } from '@sendbird/uikit-react/VoiceRecorder/context'
  import useVoiceRecorder from '@sendbird/uikit-react/VoiceRecorder/useVoiceRecorder'
  ```
  * VoiceRecorderProvider: A react context provider component providing `start`, and `stop` functions
  * useVoiceRecorderContext: A react useContext hook of VoiceRecorderProvider
  * useVoiceRecorder: A react hook that provides advanced context, `recordingLimit`, `recordingTime`, `recordingFile`, and `recordingStatus`. Recommend using this hook in the customized components.
* VoicePlayer
  ```javascript
  import { VoicePlayerProvider, useVoicePlayerContext } from '@sendbird/uikit-react/VoicePlayer/context'
  import useVoicePlayer from '@sendbird/uikit-react/VoicePlayer/useVoicePlayer'
  ```
  * VoicePlayerProvider: A react context provider component providing `play`, and `pause` functions
  * useVoicePlayerContext: A react useContext hook of VoicePlayerProvider
  * useVoicePlayer: A react hook that provides advanced context, `playbackTime`, `duration`, and `playingStatus`. Recommend using this hook in the customized components.
* utils/isVoiceMessage: A function that you can check if the given message is a voice message
  ```javascript
  import isVoiceMessage from '@sendbird/uikit-react/utils/message/isVoiceMessage'
  const isVoiceMsg: boolean = isVoiceMessage(message);
  ```

Edits

* Install `lamejs` to transcode the audio file to mp3
* Add props `isVoiceMessageEnabled` and `voiceRecord` props to the App, `SendbirdProvider`, and `MessageInput` components, to turn on/off the voice message recording feature
  ```javascript
  <SendbirdProvider
    isVoiceMessageEnabled
    voiceRecord={{
      maxRecordingTime: 60000,
      minRecordingTime: 1000,
    }}
  >
    {/* implement custom application */}
  </SendbirdProvider>
  ```
* Add props `renderFileUploadIcon`, `renderVoiceMessageIcon`, and `renderSendMessageIcon` into the `Channel`, `ChannelUI`, and `MessageInput` component
* Add `onVoiceMessageIconClick` props to the `MessageInput` component
* Add `onBeforeSendVoiceMessage` props to the `Channel` component
* Fetch message list including `MetaArray` in the `Channel` and `Thread` modules
* Provide new icon-type `AudioOnLined` & new icon-color Primary2 and OnBackground4
* Provide new string sets
  ```javascript
  <SendbirdProvider
    stringSet={{
      BUTTON__OK: 'OK',
      VOICE_MESSAGE: 'Voice Message',
      MODAL__VOICE_MESSAGE_INPUT_DISABLED__TITLE_MUTED: 'You\'re muted by the operator.',
      MODAL__VOICE_MESSAGE_INPUT_DISABLED__TITLE_FROZEN: 'Channel is frozen.',
    }}
  >
    {/* implement custom application */}
  </SendbirdProvider>
  ```
  * `BUTTON__OK`: 'OK' → Used on the submit button of pop up modal
  * `MODAL__VOICE_MESSAGE_INPUT_DISABLED__TITLE_MUTED`: 'You\'re muted by the operator.' → Used in an alert pop-up modal
  * `MODAL__VOICE_MESSAGE_INPUT_DISABLED__TITLE_FROZEN`: 'Channel is frozen.' → Used in an alert pop-up modal
  * `VOICE_MESSAGE`: 'Voice Message' → Used in ChannelPreviewItem, QuoteMessage, and MessageSearch to appear that the message type is the voice