List other key features

The platform guide serves as an overview of what Apetis is, highlighting its main
features. For this reason, add references to other important features provided by
Apertis.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>

content/overview/platform-guide.md

@@ -179,6 +179,15 @@ any non signed software to run on the hardware.
 Licenses like GPL-3 are not friendly to this type of systems, and for this reason
 Apertis follows a strict [GPL-3 free policy]({{<ref "license-expectations.md">}})
 
+# Other key features
+
+- Support for custom hardware based on [HWpacks]({{< ref "hwpack-requirements.md#concepts" >}})
+- Optimized development workflow for embedded platforms
+- [Long term reproducibility]({{<ref "long-term-reproducibility.md" >}})
+- [Support Software Bill of Material]({{<ref "software_bill_of_materials.mv" >}})
+- Robust and secure upgrades
+- [Automated testing on LAVA on real hardware]({{<ref "qa.md">}})
+
 # Key technologies
 
 Apertis makes heavy use of many open source technologies to form a strong platform: