Send announcements as email in Embedathon

[anirudhprabhakaran3]

Description

Introduces a generic util function for sending emails, and sends Embedathon announcements as emails.

Fixes # (issue)

Dependencies

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Type of Change

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• [ ] New feature (non-breaking change which adds functionality)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

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• [ ] Test A
• [ ] Test B

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Checklist

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