feat(CourseInformation): add admin

app/admin/course_information_module.rb

@@ -0,0 +1,63 @@
+ActiveAdmin.register CourseInformationModule do
+  permit_params :course_id,
+                :name,
+                :description,
+                :position,
+                :visible,
+                course_information_module_items_attributes: [
+                  :id,
+                  :name,
+                  :description,
+                  :position,
+                  :visible,
+                  :_destroy
+                ]
+
+  form do |f|
+    f.inputs do
+      f.input :course
+      f.input :name
+      f.input :description
+      f.input :position
+      f.input :visible
+      f.has_many :course_information_module_items, heading: false, allow_destroy: true do |r|
+        r.input :name
+        r.input :description
+        r.input :position
+        r.input :visible
+      end
+    end
+    f.actions
+  end
+
+  show do
+    attributes_table do
+      row :course
+      row :name
+      row :description
+      row :position
+      row :visible
+      row :created_at
+      row :updated_at
+    end
+
+    panel "Course Information Module Items" do
+      table_for course_information_module.course_information_module_items do
+        column :name
+        column :description
+        column :position
+        column :visible
+      end
+    end
+  end
+
+  index do
+    selectable_column
+    id_column
+    column :course
+    column :name
+    column :position
+    column :visible
+    actions
+  end
+end