Merge branch 'main' into 'feat/tutorial-5-belajarbelajar'

# Conflicts:
#   README.md
#   belajarbelajar/build.gradle
#   belajarbelajar/src/main/java/apap/tutorial/belajarbelajar/controller/CourseController.java
#   belajarbelajar/src/main/java/apap/tutorial/belajarbelajar/model/CourseModel.java
#   belajarbelajar/src/main/java/apap/tutorial/belajarbelajar/model/PengajarModel.java
#   belajarbelajar/src/main/java/apap/tutorial/belajarbelajar/service/CourseServiceImpl.java
#   belajarbelajar/src/main/resources/application.properties
#   belajarbelajar/src/main/resources/templates/add-course.html
#   belajarbelajar/src/main/resources/templates/add-penyelenggara.html
#   belajarbelajar/src/main/resources/templates/delete-course.html
#   belajarbelajar/src/main/resources/templates/form-add-course.html
#   belajarbelajar/src/main/resources/templates/form-add-penyelenggara.html
#   belajarbelajar/src/main/resources/templates/form-update-course.html
#   belajarbelajar/src/main/resources/templates/fragments/fragment.html
#   belajarbelajar/src/main/resources/templates/home.html
#   belajarbelajar/src/main/resources/templates/update-course.html
#   belajarbelajar/src/main/resources/templates/view-course.html
#   belajarbelajar/src/main/resources/templates/viewall-course.html
#   belajarbelajar/src/main/resources/templates/viewall-penyelenggara.html