[chechen_latin] Enhance Keyboard: Inter Font, Layout Improvements and update to Keyman Developer v17

[gushmazuko]

Pull Request Title

**Enhance Chechen Latin Keyboard: Inter Font, Layout Improvements and update to Keyman Developer v17

Pull Request Description

This PR includes several updates to the Chechen Latin Keyboard:

1. Use Inter Font for iOS-like Appearance

   • Replaces the old font with Inter, offering a modern and more readable design.
   • Enhances visual comfort and better resembles the native iOS keyboard, especially in dark mode.

2. Change Touch Layout Hint Method to First Longpress Key

   • Adjusts how hints appear, making it more intuitive and user-friendly.

3. Update README & Fix Author

   • Refreshes documentation for clarity and accuracy.
   • Corrects the author’s information.

[keyman-server]

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[LornaSIL]

• We'll need you to update the LICENSE.md file to extend the copyright years like this Copyright © 2022-2025 Vayfond
• We also will need the HISTORY.md file to be updated for this version of the keyboard to explain what has been enhanced in this version of the keyboard. We prefer the latest changes to be at the top of the file, not the bottom so it's easy to see and to follow how most of our keyboards have done it.