Add top place number to VK bot info command

[konard]

Summary

Added functionality to show user's top ranking position in the VK bot info command as requested in issue #42.

Changes Made

• New Function: Added get_user_top_position() method to DataBuilder class that calculates a user's ranking position based on karma sorting
• Enhanced Info Message: Updated build_info_message() in CommandsBuilder to include top position when:
  • Karma is enabled in the chat
  • User is in a group chat (peer_id > 2e9)
  • VK instance is available for ranking calculation
• Updated Command Handler: Modified info_message() method in Commands class to pass required parameters
• Test Scripts: Added experiment scripts to verify the ranking logic works correctly

Example Output

Before: User123, Ваша карма - [85][+2.0-1.0].
After: User123, Ваша карма - [85][+2.0-1.0] (место в топе: 3).

Technical Details

• Uses the same ranking logic as the existing top command (sorted by real karma)
• Filters users the same way as top command (excludes users with 0 karma AND no programming languages)
• Position is 1-based (1st place, 2nd place, etc.)
• Returns 0 if user is not found in ranking
• Only displays position in group chats with karma enabled

Test Plan

• Added logic verification tests in experiments/test_logic.py
• Syntax checking passes for all modified Python files
• Position calculation correctly handles edge cases (user not in ranking, filtered users)
• Info message properly includes position only when appropriate conditions are met

Fixes #42

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