Change TaskScheduler installation to use symlink

.github/workflows/main.yml

@@ -275,8 +275,7 @@ jobs:
         run: |
           mkdir -p lib
           # Install TaskScheduler (current branch)
-          mkdir -p lib/TaskScheduler
-          cp -r src/* lib/TaskScheduler/
+          ln -s ../../../ lib/TaskScheduler
           # Install other required libraries
           # Install QueueArray from Arduino Playground
           wget -O queuearray.zip https://playground.arduino.cc/uploads/Code/QueueArray/index.zip