docs(annuaire_entreprises): add README

Author: douglasduteil

packages/annuaire_entreprises/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Direction Interministérielle du Numérique - Gouvernement Français
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/annuaire_entreprises/README.md

@@ -0,0 +1,50 @@
+# 📋 @proconnect-gouv/proconnect.annuaire_entreprises
+
+> 📊 Annuaire des Entreprises data for ProConnect
+
+## ⚙️ Installation
+
+```bash
+npm install @proconnect-gouv/proconnect.annuaire_entreprises
+```
+
+## 📖 Usage
+
+### Public Service Classification Data
+
+Get public service classification constants from `@proconnect-gouv/proconnect.annuaire_entreprises`
+
+```ts
+import {
+  NATURE_JURIDIQUE_SERVICE_PUBLIC,
+  SERVICE_PUBLIC_BLACKLIST,
+  SERVICE_PUBLIC_WHITELIST,
+} from "@proconnect-gouv/proconnect.annuaire_entreprises";
+
+// Check if a legal nature code corresponds to a public service
+const isPublicServiceNature = NATURE_JURIDIQUE_SERVICE_PUBLIC.includes("7160");
+
+// Check if a SIREN is explicitly blacklisted (never a public service)
+const isBlacklisted = SERVICE_PUBLIC_BLACKLIST.includes("123456789");
+
+// Check if a SIREN is whitelisted (always a public service)
+const isWhitelisted = SERVICE_PUBLIC_WHITELIST.includes("987654321");
+```
+
+## 📊 Available Data
+
+- **`NATURE_JURIDIQUE_SERVICE_PUBLIC`** - Legal nature codes for public services from [Annuaire des Entreprises](https://github.com/annuaire-entreprises-data-gouv-fr/search-infra)
+- **`SERVICE_PUBLIC_BLACKLIST`** - SIREN numbers explicitly excluded from public service classification
+- **`SERVICE_PUBLIC_WHITELIST`** - SIREN numbers explicitly included as public services
+
+## 🔄 Data Updates
+
+Data is synced from the [Annuaire des Entreprises search infrastructure](https://github.com/annuaire-entreprises-data-gouv-fr/search-infra) using:
+
+```bash
+npm run build:data
+```
+
+## 📖 License
+
+[MIT](./LICENSE.md)