Add student feedback issue template

provides a template for students to give feedback on the onboarding process

.github/ISSUE_TEMPLATE/student_feedback.md

@@ -0,0 +1,20 @@
+---
+name: Student feedback
+about: Provide feedback about the onboarding process or materials
+title: "[FEEDBACK] "
+labels: feedback
+assignees: ''
+
+---
+
+**Feedback on specific module/session**
+Which part of the onboarding process are you giving feedback on? (e.g., Module 1, Session 3)
+
+**Your experience**
+A clear and concise description of your experience with the module/session.
+
+**Suggestions for improvement**
+Any ideas or suggestions to improve the module/session.
+
+**Additional comments**
+Any other comments or feedback.