feat(db): add swagger doc

Assisted-by: Junie:gemini-3-flash
Signed-off-by: Klagarge <remi@heredero.ch>

db/README.md

@@ -18,5 +18,13 @@ cp .env.template .env
 docker compose up -d
 ```
 
+## Development
+
+### Swagger Documentation
+
+```bash
+swag init
+```
+
 ## Traefik
 A traefik config file is available on [traefik.yml](./traefik.yml). It can be used with an OIDC provider ([Authentik](https://github.com/goauthentik/authentik) in our case) to control access to the database explorer.