We value Open Source and make a point to release all our plugins on GitHub under a BSD License.
Download the latest vscode-wakatime plugin vsix from open-vsx.org.
Rename the .vsix file to .zip.
Extract the zip file into ~/.arduinoIDE/plugins/vscode-wakatime.
Relaunch your Arduino IDE.
Enter your API Key, then press enter.
(If you’re not prompted, press F1 or CMD + Shift + P then type WakaTime API Key.)
Use Arduino IDE like you normally do and your coding activity will be displayed on your WakaTime Dashboard.