Add docs for the Zerproc integration (#13388)

* Add docs for the Zerproc integration

* Minor changes

* Update release

Co-authored-by: Fabian Affolter <mail@fabian-affolter.ch>

source/_integrations/zerproc.markdown

@@ -0,0 +1,46 @@
+---
+title: Zerproc Bluetooth Lights
+description: Instructions for integrating Zerproc bluetooth lights within Home Assistant.
+ha_category:
+  - Light
+ha_iot_class: Local Polling
+ha_release: "0.111"
+ha_domain: zerproc
+---
+
+This integration discovers nearby Zerproc lights and adds them to Home Assistant.
+
+## Setup
+
+This integration requires `pybluez` to be installed. On Debian based installs, run
+
+```bash
+sudo apt install bluetooth
+```
+
+Before you get started with this integration, please note that:
+
+ - Not compatible with Windows
+ - Requires access to the Bluetooth stack, see [Rootless Setup section](#rootless-setup) for further information
+
+## Configuration
+
+This integration can be configured using the integrations page in Home Assistant.
+
+Menu: **Configuration** -> **Integrations**.
+
+Click on the `+` sign to add an integration and search for **Zerproc**.
+
+The integration will scan for nearby devices, and is completed if any are found. No additional configuration is required. The integration will perform a BLE scan every 60 seconds to search for new devices.
+
+## Rootless Setup
+
+Normally accessing the Bluetooth stack is reserved for `root`, but running programs that are networked as `root` is a bad security wise. To allow non-root access to the Bluetooth stack we can give Python 3 and `hcitool` the missing capabilities to access the Bluetooth stack. Quite like setting the setuid bit (see [Stack Exchange](https://unix.stackexchange.com/questions/96106/bluetooth-le-scan-as-non-root) for more information).
+
+```bash
+sudo apt-get install libcap2-bin
+sudo setcap 'cap_net_raw,cap_net_admin+eip' `readlink -f \`which python3\``
+sudo setcap 'cap_net_raw+ep' `readlink -f \`which hcitool\``
+```
+
+A restart of Home Assistant is required.