Add .NET MAUI

**Tool Name:** .NET MAUI

**Link to the tool website:**

* https://github.com/dotnet/maui

* [ ] This tool supports creating desktop apps on more than one desktop operating system (Windows, Linux, OSX)

**Anything else you want to add:**

* .NET multi-platform framework for building native app GUIs

**OS:** 

**Lang:** 

**Pros:**
* 

**Cons:**
* 
