Added Mutesync (#17593)

Co-authored-by: Klaas Schoute <klaas_schoute@hotmail.com>
Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>

source/_integrations/mutesync.markdown

@@ -0,0 +1,24 @@
+---
+title: Mutesync
+description: Instructions on how to integrate Mutesync button with Home Assistant.
+ha_category:
+  - Presence Detection
+ha_release: 2021.5
+ha_iot_class: Local Polling
+ha_config_flow: true
+ha_codeowners:
+  - '@currentoor'
+ha_domain: mutesync
+ha_platforms:
+  - binary_sensor
+---
+
+The mutesync integration for Home Assistant connects to the [mütesync virtual button](https://mutesync.com/). This tray app pairs with popular video conferencing tools such as Zoom, Google Meet, Discord, and Teams.
+
+With this integration, Home Assistant can track when you're in a meeting and whether your mic is muted/unmuted.
+
+There is currently support for the following platforms within Home Assistant:
+
+- Binary sensor - mic muted/unmuted and meeting live/not-live
+
+{% include integrations/config_flow.md %}