Update TagoIO logo URL and add region field to configuration

[mateuscardosodeveloper]

Summary

This pull request updates the TagoIO webhook template to improve branding and configuration options.

Changes

• Updated the TagoIO logo URL to ensure correct branding
• Added a region selection field to the configuration allowing users to choose between:
  • United States (us-e1)
  • European Union (eu-w1)
• Improved the webhook template configuration to support regional endpoints

Notes for Reviewers

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Checklist

• Scope: The referenced issue is addressed, there are no unrelated changes.
• Compatibility: The changes are backwards compatible, they don't break existing deployments.
• Testing: The changes are tested.
• Documentation: Relevant documentation is added or updated.

[CLAassistant]

All committers have signed the CLA.