resources: add french "Citizen Initiatives Accelerator"

fix Open-Models#340

Not focus on open models, but the project seems to have a strong
relation to commons as hosted by a public administration.

ressources.md

@@ -81,6 +81,7 @@ et notre savoir collectif sera appréciée, idéalement en issue (ou directement
 - 🕴️ [Open Climate](https://open-climate.org/), exploring the intersection between the open movement and the climate crisis
 - 🕴️ [Digital Public Goods Alliance](https://digitalpublicgoods.net/)
 - 🕴️ [International Association for the Study of the Commons](https://iasc-commons.org/) (IASC)
+- 🏦 🇫🇷 [Accélérateur d'Initiatives Citoyennes](https://citoyens.transformation.gouv.fr/) (DINUM), commons related citizen initiatives accelerator
 
 ## Open Source