docs: Add SaneHosts to Third-Party Hosts Managers

Author: MrSaneApps

readme_template.md

@@ -599,6 +599,7 @@ devices under a variety of operating systems.
   most welcome.
 - [ViHoMa](https://github.com/cmabad/ViHoMa) is a Visual Hosts file Manager,
   written in Java, by Christian Martínez. Check it out!
+- [SaneHosts](https://sanehosts.com "SaneHosts") (for macOS): A native hosts file manager with profile-based blocking, Touch ID protection, and support for 200+ curated blocklists. Open source.
 
 ## Interesting Applications