[feat] Enrollment confirmation page

[erikbayerlein]

Epic: #69 (Seleção de Temas e Finalização SIGAA)
Use Case: #64

Description

Page displayed after successful enrollment submission.

Acceptance Criteria

• Displays enrollment summary (level, themes, CV score, SIGAA code).
• Success message and visual confirmation (icon/animation).
• Option to view/download enrollment summary.
• Link to return to dashboard.
• While period is open: link to edit enrollment.