feat: add parse-dmarc

[meysam81]

Thanks for taking the time to suggest an addition to awesome-sysadmin!

To ensure your Pull Request is dealt with swiftly, please check the following (check the boxes [x]):

• Submit one item per pull request. This eases reviewing and speeds up inclusion.
• Your addition is Free software.
• You have searched the repository for any relevant issues or PRs, including closed ones.
• Any software you are adding is not already listed at any of awesome-selfhosted, dbdb.io.
• Software you are submitting is not your own, unless you have a healthy ecosystem with a few contributors (which aren't your sock puppet accounts).
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Please take some time to answer the following questions as best you can:

• Why is it awesome?

It's a single-binary, quick to setup, no external dependency required, and has beautiful and intuitive dashboard.

• Have you used it? For how long?

Yes, I've been running it for my own setup from the very first version.

• Is this in a personal or professional setup?

It can be both but in general, it's a niche DMARC space and so it's a better fit for professionals.

• How many devices/users/services/... do you manage with it?

I manage 10-20 domains with this including their subdomains.

• Biggest pros/cons compared to other solutions?

Pros:

• dependency-free
• easy to setup
• single-binary

Cons:

• less mature than established tools
• not supporting all the protocols (yet)

• Any other comments about your use case, things you've found excellent, limitations you've encountered... ?

the project's first release is not 12 month old but I was referred here after awesome-selfhosted submissions: https://github.com/awesome-selfhosted/awesome-selfhosted-data/issues?q=parse-dmarc

please let me know if 12-month-old first release is a deal-breaker.

thanks.