Add provisioning wizard access step

[shekohex]

Summary

• Add built-in SSH Access configuration to ProvisioningWizard
• Render SSH Access as a real final multistep wizard step when sshAccess is provided
• Export SSH access types from the pages barrel
• Bump package version to 0.16.3 so release workflow publishes on merge

Validation

• pnpm typecheck
• pnpm test -- src/pages/provisioning-wizard.test.tsx
• pnpm build

Review Guide

• Focus src/pages/provisioning-wizard.tsx step sequencing with and without sshAccess
• Verify skipToReview lands on the actual final step when SSH Access is enabled
• Verify SSH UI uses existing primitives (Badge, Button, Textarea) rather than custom controls