[Feature] “Generate Doxygen Comment” doesn't work when // in the second line and after

[v-ericawu]

Feature Request

Feature Request: The Generate Doxygen Comment doesn't work when the // is added because it's designed to only work if there's no pre-existing comment. Suggesting show some info message explaining why it didn't work

Repro Steps:

1. Download SingleRootProject and open with VSCode, then open doxygen_generation.cpp file.
2. Type // on line 2.
3. Navigate and Click on the ‘add_nmbers’ function.
4. Right-click on the mouse and click on the ‘Generate Doxygen Comment’ button.

Expected Result: It is recommended to display some information explaining why generating Doxygen comments does not work when // is added

Actual Result: “Generate Doxygen Comment” doesn't work when // in the second line and after