added files

Author: DoglaYuliia

.github/pull_request_template.md

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+## Changes Description
+- Added a `CODEOWNERS` file to assign `yuliiadolgopolova` as the code owner of the `main` branch.
+- Created a `pull_request_template.md` file to standardize PR descriptions.
+- Protected the `main` and `develop` branches with specific rules.
+- Set `develop` as the default branch.
+
+## Issue Number and Link
+(Provide the task number and link here)
+
+## Checklist before requesting a review
+- [ ] I have performed a self-review of my code.
+- [ ] If this is a core feature, I have added thorough tests.
+- [ ] Do we need to implement analytics?
+- [ ] Is this part of a product update? If yes, please write a brief description.

CODEOWNERS

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+* @yuliiadolgopolova