Create mentors page

[Kseniia Pelykh]

On our website you can see two menu items: "Головна/Main" and "Студенти/Students".
We need to add a new page "Команда/Team" with brief intro about us.

You can take the "Студенти/Students" as an example on how the page should be developed.

This issue can be divided in this parts:

1. Add a new folder team_data to https://github.com/KseniiaPelykh/palianytsia.it/tree/main/server
2. Create 2 json files similar to this one - for me and @hlobys, please ask as for name, description and pictures.
3. Add our picture to the images folder.
4. Add team members retrieving logic to the api folder. Similar to this.
5. Add team route to index.js.
6. Add a new 'team' page to menu.

Please ask me or @hlobys in case you have questions.