add NetAlertX to Cosmos-Server MarketPlace

[FlyingToto]

Is there an existing issue for this?

• [X] I have searched the existing open and closed issues

Am I willing to test this? 🧪

• [X] I will do my best to test this feature on the netlertx-dev image when requested within 48h and report bugs to help deliver a great user experience for everyone and not to break existing installations.

Can I help implement this? 👩‍💻👨‍💻

• [X] Yes
• [ ] No

Is your feature request related to a problem? Please describe

not a problem per say just simplifying things:

• will drastically simplify the installation of NetAlertX for existing Cosmos-Server users
• will foster adoption of NetAlertX by promoting it in Cosmos Marketplace
• will leverage Cosmos-Server features in particular: automated maintenance/upgrades/proxying/security/2fa integration/ddns and letsencrypt management... allow to leverage other components already on the market place like NTFY self-hosted server or HomeAssistant...

Describe the solution you'd like

add NetAlertX to Cosmos-Server MarketPlace

Describe alternatives you've considered

n/a

Anything else?

I can submit a request to their official MarketPlace site, since I already configured NetAlertX inside Comos-Server. Furthermore, if they approve it I can provide pointers to add to the NetAlertX install readme covering the Cosmos-Server MarketPlace usage.