Create Batch Modal from Contact Book (Payroll)

[Huygon764]

Problem: Currently, creating a batch transaction requires adding each recipient manually. There is no way to select multiple contacts from the Contact Book and create a batch transfer quickly — this flow is essential for payroll use cases (paying multiple people at once).

Expected behavior: Add a "Create batch" button on the Contact Book page. Clicking it opens a single modal with 3 steps:

• Choose Contact — display contacts list with group filter tabs, multi-select checkboxes, select all, selected count, and a Continue button.
• Add to Batch — show selected contacts, each row with an amount input, token selector (TokenPillPopover), and a delete button. A Create button at the bottom.
• Transaction Summary — review all transfers with token icons, amounts, recipients. A Submit batch button that calls useBatchTransaction with step-by-step loading progress.