Documentation for the FiveM integration (#21365)

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

source/_integrations/fivem.markdown

@@ -0,0 +1,35 @@
+---
+title: FiveM
+description: Instructions on how to integrate a FiveM server into Home Assistant.
+ha_release: 2022.3
+ha_category:
+  - Binary Sensor
+  - Sensor
+ha_iot_class: Local Polling
+ha_quality_scale: silver
+ha_config_flow: true
+ha_codeowners:
+  - '@Sander0542'
+ha_domain: fivem
+ha_platforms:
+  - binary_sensor
+  - sensor
+---
+
+FiveM allows players to play the game [Grand Theft Auto V](https://www.rockstargames.com/V) by [Rockstar Games](https://www.rockstargames.com) online with other players. FiveM adds support for custom resources. The FiveM integration lets you retrieve information from a FiveM server within Home Assistant.
+
+{% include integrations/config_flow.md %}
+
+## Binary sensors
+
+This integration provides a binary sensor for the following information from a FiveM server:
+
+- Connection status
+
+## Sensors
+
+This integration provides sensors for the following information from a FiveM server:
+
+- Number of online players (player names are available in state attributes)
+- Number of maximum players
+- Number of resources (resource names are available in state attributes)