feat: use mailto to send formatted emails

[MaGOs92]

Features :

• Génère des emails à envoyer par l'utilisateur grâce à des liens mailto
• Supprime l'envoi de mail via bal-admin

[Copilot]

Pull Request Overview

This PR implements a new mailto-based email system to replace the previous server-side email sending functionality through bal-admin. The changes remove CAPTCHA validation and server-side email handling in favor of generating pre-formatted emails that users can send through their email clients.

• Removes server-side email sending functionality and CAPTCHA validation
• Implements mailto URL generation for pre-formatted emails
• Refactors forms to use the new mailto system instead of direct submission

Reviewed Changes

Copilot reviewed 23 out of 24 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/utils/signalement.utils.ts	Adds function to browse to external signalement system
src/types/signalement.types.ts	Defines new SignalementType enum for different location operations
src/types/APIGeo.types.ts	Adds interface for commune API responses
src/pages/commune/index.tsx	Extracts commune fetching logic to separate module
src/lib/api-geo.ts	Creates dedicated module for geo API functions
src/lib/api-depot.ts	Creates dedicated module for depot API functions
src/hooks/useMailToForm.ts	Implements new hook for mailto form handling
src/hooks/useContactForm.ts	Removes old contact form hook with server submission
src/hooks/useCommuneInfos.tsx	Updates to use extracted API functions
src/hooks/useBALAdmin.ts	Removes email sending methods
src/hooks/useAPIDepot.ts	Removes deprecated hook, functionality moved to api-depot module
src/components/particulier/ParticulierTroubleshooting/ParticulierTroubleshooting.tsx	Updates address handling and integrates with signalement system
src/components/particulier/AdresseProblemForm/mailto-signalement.template.ts	Adds email template for signalement emails
src/components/particulier/AdresseProblemForm/AdresseProblemForm.tsx	Refactors to use mailto system instead of server submission
src/components/particulier/AdresseNotFoundInBAN/AdresseNotFoundInBAN.tsx	Updates address type structure
src/components/particulier/AdresseFoundInBAN/AdresseFoundInBAN.tsx	Adds integration with signalement system for found addresses
src/components/common/ContactForm/ContactForm.tsx	Converts to mailto system with commune autocomplete
src/components/common/ContactForm/ContactForm.styles.tsx	Removes CAPTCHA-related styling
src/components/common/Autocomplete/Autocomplete.tsx	Adds value prop and clear functionality
package.json	Removes CAPTCHA dependency
README.md	Removes CAPTCHA environment variable documentation
.github/workflows/deploy.yml	Removes CAPTCHA environment variable from deployment
.env.sample	Removes CAPTCHA environment variable from sample

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