Add PR template CU-86bx2ntyx (#50)

* Add PR template to the repository, with information aligned with guidelines in notion

.github/pull_request_template.md

@@ -0,0 +1,15 @@
+**Description:**
+
+Add description here. It should illustrate the main purpose of the PR, including an overview of the problem and the technical solution. It should not repeat the task description, but rather go in depth regarding implementation choices. If the PR is really simple, this can be avoided, and the section deleted.
+
+**This PR includes:**
+
+- Add main changes here
+
+**How to run:**
+
+- Add instructions on how to run here
+
+**Demo:**
+
+- Add here screenshots, or a loom, showcasing the changes