Add (3.0) [text] examples

[Andre-LA]

• [x] text_raylib_fonts
• [ ] text_font_spritefont
• [ ] text_font_loading
• [ ] text_font_filters
• [ ] text_font_sdf
• [ ] text_format_text
• [ ] text_input_box
• [ ] text_writing_anim
• [ ] text_rectangle_bounds
• [ ] text_unicode