Summary: Hexlet adds "Solutions" menu for Teams, College, Private School

Why It Matters: This shows Hexlet is now targeting groups, not just individuals.

What Changed:

• A new menu item "Solutions" was added.
• Under "Solutions," three new sub-items appeared: "Teams," "College," and "Private School," each with a description.
• The number of students who started studying in the last week changed from 1384 to 1281.