Refactor e-imunisasi pakai bloc state management

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Memastikan dart migrate null safety memastikan upgrade versi flutter - latest 3.7.10

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Refactor Fitur:

1. Splash
2. Onboarding
3. Auth - Login Email
4. Auth - Login No HP
5. Auth - Registrasi Email
6. Auth - Registrasi No HP
7. Auth - Reset Password
8. Local Auth - PIN
9. Bantuan
10. Pesan
11. Profil
12. Kalender
13. Buku Sehat
14. Kontak
15. Vaksinasi

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DONE

1. Splash
2. Onboarding
3. Auth - Login Email
4. Auth - Login No HP
5. Auth - Registrasi Email
6. Auth - Reset Password
7. Local Auth - PIN

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IN PROGRESS Auth - Registrasi No HP

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IN PROGRESS

11. Profil

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• Fix all unit tests
• For these features: Bantuan Pesan Kalender Buku Sehat Kontak Vaksinasi

Will have one issue for each remaining feature.