Add Precis

[leozqin]

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

NOTE: I previously had another PR for this, but I've since force pushed to that branch so that PR may not be reopened.

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

• [x] Submit one item per pull request. This eases reviewing and speeds up inclusion.
• [x] You have searched the repository for any relevant issues or PRs, including closed ones.
• [x] Any software you are adding is not already listed at any of awesome-sysadmin, staticgen.com, staticsitegenerators.net, dbdb.io.
• [x] The file you are adding is formatted as described in addition.md.
• [x] Demo links should only be used for interactive demos, i.e. not video demonstrations.
• [x] Comments and unused optional fields have been removed.
• [x] The file you are adding uses kebab-case file naming, for example my-awesome-software.yml.
• [x] Values for platform are the main server-side requirements for the software. Don't include frameworks or specific dialects.
• [x] Any software project you are adding to the list is actively maintained.
• [x] Any software project you are adding was first released more than 4 months ago.
• [x] Any software project you are adding has working installation instructions.
• [x] You understand that your Pull Request will be merged ~1 week after approval, to allow for further comments if needed.