fix: special shortcut for Windows live notifications (#5975)

src/common/Modes.cpp

@@ -24,6 +24,10 @@ Modes::Modes()
         {
             this->isPortable = true;
         }
+        else if (line == "externally-packaged")
+        {
+            this->isExternallyPackaged = true;
+        }
     }
 }
 

src/common/Modes.hpp

@@ -11,6 +11,12 @@ public:
 
     bool isNightly{};
     bool isPortable{};
+
+    /// Marked by the line `externally-packaged`
+    ///
+    /// The externally packaged mode comes with the following changes:
+    ///  - No shortcuts are created by default
+    bool isExternallyPackaged{};
 };
 
 }  // namespace chatterino