feat: Add From address to personalization

[grin]

Adds From address to personalization, as mentioned in: https://sendgrid.com/docs/for-developers/sending-email/personalizations/

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
• I have titled the PR appropriately
• I have updated my branch with the main branch
• I have added tests that prove my fix is effective or that my feature works there are no tests for personalizations
• I have added the necessary documentation about the functionality in the appropriate .md file only added a doc comment in examples
• I have added inline documentation to the code I modified

[grin]

This isn't triggering a travis build, any ideas why?