⚒️[FEATURE] SendGrid API Integration

[HenryHengZJ]

Describe the feature you'd like

SendGrid API Integration
Docs: https://docs.sendgrid.com/for-developers/sending-email/api-getting-started

✅Tasks

• Add SendGridAPI action node.

🎯Acceptance Criteria

• SendGridAPI action node should be able to send Email using API Key

👨‍💻How to contribute

Follow this guide for step by step on how to fork, commit, and submit PR.

🧱 How to create node

• Action node guide
• Trigger node guide
• Webhook node guide

More info

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