add badge for zenith (#188)

See: https://gitea.com/gitea/docs/pulls/451

repost:
hey, i'm part of a startup called Zenith Hosting. we help people deploy open source software with one click, where we handle persistent storage, backups, etc. we personally use gitea for a lot of our own personal selfhosting experiments, and we added Gitea to our platform. this PR simply adds a small badge to the docs page for cloud providers. badge currently links to https://zenith.hosting/host/gitea?ref=gh.

p.s., you can reach us at [hello@zenith.hosting](mailto:hello@zenith.hosting) if you wanna chat with us to know a bit more :)Reviewed-on: https://gitea.com/gitea/awesome-gitea/pulls/188

Co-authored-by: eev4n <214606+eev4n@noreply.gitea.com>

README.md

@@ -87,6 +87,12 @@ Entries are grouped by maintenance status:
 - [grp](https://github.com/feraxhp/grp) - A cli tool to interact with github, gitea and local repositories written in rust. `MIT` `Rust`
 - [tea](https://gitea.com/gitea/tea) - A command line tool to interact with Gitea servers. `MIT` `Go`
 
+#### Cloud Hosting
+
+[![Deploy with Zenith](https://cdn.zenith.hosting/buttons/deploy-with-zenith.svg)](https://zenith.hosting/host/gitea?ref=gh)
+
+Zenith Hosting offers Gitea as a one-click deployment option on the platform. They handle storage, backups, security and more.
+
 #### DevOps
 
 - [actions runner](https://gitea.com/ChristopherHX/actions_runner) - Use the actions/runner developed by GitHub with Gitea Actions. `MIT` `Go`