[New Resource] - aws_wafv2_application_integration_url

[pavloos]

Description

This PR adds new datasource for retrieving WAF application integration URL.

Relations

Closes #42768

Output from Acceptance Testing

❯ make testacc TESTS=TestAccWAFV2ApplicationIntegrationURLDataSource_basic PKG=wafv2
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.9 test ./internal/service/wafv2/... -v -count 1 -parallel 20 -run='TestAccWAFV2ApplicationIntegrationURLDataSource_basic'  -timeout 360m -vet=off
2025/05/26 19:36:57 Initializing Terraform AWS Provider...
=== RUN   TestAccWAFV2ApplicationIntegrationURLDataSource_basic
=== PAUSE TestAccWAFV2ApplicationIntegrationURLDataSource_basic
=== CONT  TestAccWAFV2ApplicationIntegrationURLDataSource_basic
--- PASS: TestAccWAFV2ApplicationIntegrationURLDataSource_basic (21.21s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/wafv2	24.713s

[github-actions]

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[github-actions]

✅ Thank you for correcting the previously detected issues! The maintainers appreciate your efforts to make the review process as smooth as possible.