Add asset transfers

[ToddWebDev]

Summary

Import the 'Asset Transfers' section of the PDF into the digital Income and Assets Statement form (21P-0969)

Issue

• https://github.com/department-of-veterans-affairs/va.gov-team/issues/86364

Related issue(s)

n/a

Associated Pull Request(s)

• https://github.com/department-of-veterans-affairs/vets-json-schema/pull/948

How to run in local environment

1. Check out this branch locally
2. Run vets-website and vets-api
3. In your local environment, set the income_and_assets_form_enabled flipper to 'enabled' at http://localhost:3000/flipper/features/income_and_assets_form_enabled
4. Go to http://localhost:3001/income-and-asset-statement-form-21p-0969 in your browser

How to verify

1. Continue to the Asset Transfers chapter /asset-transfers-summary
2. Add an asset transfer
3. Verify the asset transfer can be edited and deleted

What areas of the site does it impact?

Income and Asset Statement Form

Screenshots

Summary Page

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Item Pages

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Quality Assurance & Testing

• [ ] New unit tests (if applicable)
• [x] New E2E tests added (if applicable)
• [x] Existing unit tests and integration tests are passing
• [x] Existing E2E tests are passing
• [x] No sensitive information (i.e. PII/credentials/internal URLs/etc.) is captured in logging, hardcoded, or specs
• [x] Linting warnings have been addressed
• [ ] Documentation has been updated (link to documentation *if necessary)
• [x] Screenshot style, layout and content matches the design references
• [x] Accessibility testing has been performed

Error Handling

• [ ] Browser console contains no warnings or errors.
• [ ] Events are being sent to the appropriate logging solution
• [ ] Feature/bug has a monitor built into Datadog or Grafana (if applicable)

Authentication

• [x] Did you login to a local build and verify all authenticated routes work as expected with a test user

Requested Feedback

(OPTIONAL) What should the reviewers know in addition to the above. Is there anything specific you wish the reviewer to assist with. Do you have any concerns with this PR, why?