Update WebGL background animation for theme changes

[igorcosta]

Related to #5

Updates the WebGL background animation to display morphic lines that change color based on the user-selected theme and simplifies theme toggling logic.

• WebGL Animation Changes:

  • Removes the initial box and sphere effects from webgl-animation.js.
  • Implements morphic lines drawing in webgl-animation.js that dynamically change color between black and white depending on the theme.
  • Adds an event listener in webgl-animation.js for theme changes, triggering a redraw of the animation with the updated theme colors.

• Theme Toggling Enhancement:

  • Modifies theme-toggle.js to emit a custom event with the theme detail upon toggling between light and dark themes. This event is used by webgl-animation.js to adjust the animation colors accordingly.

• Code Simplification:

  • Deletes script.js, consolidating JavaScript functionality into fewer files for easier management and maintenance.

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