Improved debug line in builder/index.js and added debug lines to shell scripts

builder/steps/activate.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+echo "In activate.sh"
+
 if [[ -n "$UNITY_LICENSE" ]]; then
   #
   # PERSONAL LICENSE MODE

builder/steps/build.sh

@@ -4,6 +4,8 @@
 # Set project path
 #
 
+echo "In build.sh"
+
 UNITY_PROJECT_PATH=$GITHUB_WORKSPACE/$PROJECT_PATH
 echo "Using project path \"$UNITY_PROJECT_PATH\"."
 

builder/steps/return_license.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+echo "In return_license.sh"
+
 if [[ -n "$UNITY_SERIAL" ]]; then
   #
   # PROFESSIONAL (SERIAL) LICENSE MODE