added dekstop shortcut with proper icons

liebchen.yml

@@ -140,4 +140,20 @@
       line: "PATH=$PATH:/opt/matlab/R2023b/bin"
     when: check.found == 0
 
+  - name: Add MATLAB desktop entry
+    copy:
+      dest: /usr/share/applications/matlab.desktop
+      content: |
+        [Desktop Entry]
+        Version=1.0
+        Type=Application
+        Terminal=false
+        Exec=/opt/matlab/R2023b/bin/matlab -desktop
+        Name=MATLAB
+        Icon=/opt/matlab/R2023b/bin/glnxa64/cef_resources/matlab_icon.png
+        Categories=Development;Math;Science
+        Comment=Scientific computing environment
+        Comment[zh_CN] = 科学计算环境
+        StartupNotify=true
+        StartupWMClass=com-mathworks-util-PostVMInit