feature: Add Ghostty to macOS terminals. (#928)

src/Models/ShellOrTerminal.cs

@@ -42,6 +42,7 @@ namespace SourceGit.Models
                     new ShellOrTerminal("mac-terminal", "Terminal", ""),
                     new ShellOrTerminal("iterm2", "iTerm", ""),
                     new ShellOrTerminal("warp", "Warp", ""),
+                    new ShellOrTerminal("ghostty", "Ghostty", "")
                 };
             }
             else

src/Native/MacOS.cs

@@ -44,6 +44,8 @@ namespace SourceGit.Native
                     return "iTerm";
                 case "warp":
                     return "Warp";
+                case "ghostty":
+                    return "Ghostty";
             }
 
             return string.Empty;