Adding Gomail package

[soub4i]

Please check if what you want to add to awesome-go list meets quality standards before sending pull request. Thanks!

Please provide package links to:

• repo link (github.com, gitlab.com, etc):https://github.com/go-gomail/gomail
• pkg.go.dev: https://pkg.go.dev/gopkg.in/gomail.v2
• goreportcard.com: https://goreportcard.com/report/github.com/go-gomail/gomail
• coverage service link: https://gocover.io/github.com/go-gomail/gomail

Very good coverage

Note: that new categories can be added only when there are 3 packages or more.

Make sure that you've checked the boxes below before you submit PR:
not every repository (project) will fit into every option, but most projects should

• I have added my package in alphabetical order.
• I have an appropriate description with correct grammar.
• I know that this package was not listed before.
• I have added pkg.go.dev link to the repo and to my pull request.
• I have added coverage service link to the repo and to my pull request.
• I have added goreportcard link to the repo and to my pull request.
• I have read Contribution guidelines, maintainers note and Quality standard.

Thanks for your PR, you're awesome! 👍

[avelino]

Thank you for contributing with awesome-go, we will revise your contribution as soon as possible.

Automation body links content check:

• godoc.org or pkg.go.dev: True
• goreportcard.com: False
• coverage: True

your project is about to be approved, it's under revision, it may take a few days

[phanirithvij]

#2772
#3410 (comment)
go-gomail/gomail#104
mdbtools/mdbtools#157 (comment)
go-mail/mail#68