feat: Pull Request template

Signed-off-by: Nikita Kononenko <[email protected]>

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,17 @@
+## What type of PR is this? (check all applicable)
+- [ ] Refactor
+- [ ] Feature
+- [ ] Bug Fix
+- [ ] Optimization
+- [ ] Documentation Update
+
+## Description
+> Write your description here
+
+## ![optional](https://img.shields.io/badge/optional-e22e31) Do you agree to the terms of the Yandex Contributor License Agreement (the “CLA”)?
+```
+I hereby agree to the terms of the CLA available at: [link].
+```
+> [!TIP]
+> Replace the bracketed text
+> to the current version of the CLA: https://yandex.ru/legal/cla/?lang=en (in English) or https://yandex.ru/legal/cla/?lang=ru (in Russian).