Add Integrations entry in the FAQ #345

Signed-off-by: tdruez <tdruez@nexb.com>

Author: tdruez

docs/faq.rst

@@ -15,3 +15,19 @@ How can I download SBOM for my products?
 the product details view in the web UI or from dedicated endpoint URLs of the REST API.
 
 Refer to :ref:`how_to_3` for more details.
+
+How can I integrate DejaCode with my tools or applications?
+-----------------------------------------------------------
+
+DejaCode supports three main integration approaches:
+
+- **Platform-specific integrations** for GitHub, GitLab, Jira, SourceHut, and Forgejo
+  (:ref:`platform_specific_integrations`)
+- The **REST API** for programmatic access to data and operations
+  (:ref:`rest_api_integration`)
+- **Webhooks** for receiving real-time event notifications
+  (:ref:`webhook_integration`)
+
+The last two options — REST API and webhooks — enable **generic integration** with
+virtually any application or service, giving you full flexibility to connect
+DejaCode to your existing tools and workflows.