Added PR template

Author: ricocrescenzio95

pull_request_template.md

@@ -0,0 +1,22 @@
+### 📎 References
+
+- **Issue:** [4 - Replace this with your issue](https://github.com/ricocrescenzio95/SUITextField/issues/2)
+
+### 🔬 Implementation details
+
+Describe what you've done to solve the referenced issue.
+
+### :art: Screenshots or videos
+
+Insert any screenshot or video of your implementation, if any.
+
+### 🩺 How can it be tested?
+
+Indicates steps to manually test.
+
+### ✅ Checks
+
+<!-- Feel free to delete next lines if PR doesn't involve them -->
+
+- [] **Tests:** Implement propers tests.
+- [] **Documentation:** Update both doc comments and `DocC`.