feat(frontend): Build escrow creation from template/preset

[KuchiMercy]

Description

Add Quick Create flow with built-in and user-created templates that pre-fill common escrow configurations.

Acceptance Criteria

• Template selection step before the form
• Built-in templates: Freelance Payment (2 milestones), Product Purchase (1 milestone), Service Agreement (3 milestones), Custom (empty)
• Each shows: name, description, icon, milestone structure, suggested deadline
• Template pre-fills wizard form
• Users can modify all pre-filled values
• Save as template option on successful creation
• Custom templates in localStorage (vaultix-escrow-templates)
• Custom section in template selector
• Edit and delete custom templates
• Recently used section (last 3)
• Validate template data against Zod schema
• /settings/templates page for CRUD
• Responsive grid

Points: 150

[Temi709]

@Temi709 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi Maintainer, I will be very glad and grateful if you assign me this task.
I will properly implement this git issue as you requested. Thanks you much.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Temi709 to this issue.