chore : import initial du package veille-ia-gen_ynh (packaging v2, helpers 2.1)

Extrait du dépôt veille-ia-gen (socle phase 0).
manifest validé contre le schéma officiel manifest.v2.schema.json ;
sha256 de l'archive sources en placeholder jusqu'à la release v0.1.0.

doc/DESCRIPTION.md

@@ -0,0 +1,9 @@
+Veille IA is a personal watchtower for generative AI models: releases, licenses, rankings, with a recommendation engine based on project profiles.
+
+- **Model registry**: single source of truth (git-versioned YAML), anti-hallucination rule (unverified field = "to be checked")
+- **Project profiles**: legal constraints per production context
+- **Recommendation engine**: ranked, justified shortlist with warnings
+- **Alert inbox**: events classified by a local LLM (Ollama), pushed from Node-RED
+- **Markdown export**: guides and rankings regenerated from the registry
+
+Private application (YunoHost SSO), 100% open source (AGPL-3.0), no paid API.