feat: Setup encryption at creation

Description

Screenshots

Technical details

Tests

Test case 1: Signup happens without e2ee setup when e2ee setup at signup is not on ✅

Test case 2: Signup enables e2ee correctly with account passwords when e2ee setup at signup is on ✅

Test case 3: no crypto support when e2ee setup at signup is on => not able to create ✅

Test case 4: no crypto support when e2ee setup at signup is not on => able to create ✅

Issues

• https://gitlab.e.foundation/e/infra/backlog/-/work_items/5447+

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