feat(fonts): add new Inter and SourceSans3 font files

This commit introduces a comprehensive set of new font files for the Inter typeface in various styles and weights, including Black, Bold, Italic, and more, across multiple point sizes (18pt, 24pt, 28pt). Additionally, the SourceSans3 font files have been removed to streamline font usage. These changes enhance the visual quality and flexibility of text rendering in the project.

Author: timfox