refactor: rebrand project to CRM SITECONSEIL (SARL SITECONSEIL)

- Rename all references from E-Cosplay/Ecosplay to SITECONSEIL
- Update entity from Association to SARL SITECONSEIL (Siret: 418664058)
- Update address to 27 rue Le Serurier, 02100 Saint-Quentin
- Update emails: contact@siteconseil.fr, rgpd@siteconseil.fr
- Update hosting from GCP to OVHcloud (Roubaix, Gravelines, Strasbourg, Paris)
- Update legal pages: mentions legales, CGV, RGPD, conformite, hebergement, cookies, CGU
- Add tarifs page with tabs: Site Internet, E-Commerce, Nom de domaine, Esy-Mail, Esy-Mailer, Esy-Tchat, Esy-Meet, Esy-Defender
- Add Discord webhook notification workflow
- Disable deploy and sonarqube workflows
- Update OAuth Keycloak realm to master
- Update logo references to logo_facture.png
- Remove forced image sizing in Liip Imagine filters
- Update SonarQube project key and badge token
- Update tribunal competent to Saint-Quentin
- Move tarif tabs JS to app.js (CSP compliance)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package.json

@@ -1,5 +1,5 @@
 {
-    "name": "e-cosplay",
+    "name": "siteconseil",
     "private": true,
     "version": "0.0.0",
     "type": "module",