docs: add README entry for new command

Author: empwilli

README.md

@@ -7,6 +7,7 @@ omnect-cli is a command-line tool to manage omnect-os empowered devices. It prov
 - Identity configuration:
   - Inject general identity configuration for AIS (Azure Identity Service)
   - Inject a device certificate and key
+  - Inject edge CA certificate for device/server certificate creation
 - Device Update for IoT Hub:
   - manage updates (create, import, remove) (https://learn.microsoft.com/en-us/azure/iot-hub-device-update/import-concepts)
   - inject configuration file `du-config.json` (https://docs.microsoft.com/en-us/azure/iot-hub-device-update/device-update-configuration-file)
@@ -82,7 +83,7 @@ omnect-cli identity set-device-certificate --help
 **Note1**: "device_id" has to match the `registration_id` respectively the `device_id` configured in `config.toml`.<br>
 **Note2**: see [`config.toml.est.template`](conf/config.toml.est.template) as a corresponding `config.toml` in case of using `EST service`.
 
-#### Get full-chain intermediate certificate and key for existing OMNECT PKI
+#### Get full-chain intermediate certificate and key for existing AMNESTY PKI
 Please get into contact with us in case you want to use our existing cloud services for device provisioning. We can provide certificate and key file to configure your device.
 
 #### Generate your own full-chain intermediate certificate and key
@@ -103,6 +104,20 @@ omnect-cli identity set-device-certificate-no-est --help
 **Note1**: "device_id" has to match the `registration_id` respectively the `device_id` configured in `config.toml`.<br>
 **Note2**: see [`config.toml.no-est.template`](conf/config.toml.no-est.template) as a corresponding `config.toml` in case of using `EST service`.
 
+### Inject edge CA certificate for module device/server certificate generation
+
+Generate and set edge CA certificate for the generation of device and server
+certificates. Technically, this command functions similarly `set-device-identity`:
+
+ 1. generates device specific credentials from a given intermediate certificate and key
+ 2. injects credentials into a firmware image
+
+Detailed description:
+```sh
+omnect-cli identity set-edge-ca-certificate --help
+```
+**Note**: "device_id" has to match the `registration_id` respectively the `device_id` configured in `config.toml`.<br>
+
 ## Device Update for IoT Hub
 ### Create import manifest
 This command creates the device update import manifest which is used later by the `import-update` command.