Add Animation Support for UpWindow Component

[lucasferreiralimax]

This pull request introduces animation support for the UpWindow component, enhancing user experience with various entrance and exit animations. The following key updates have been made:

1. New Animation Keyframes:

   • Added keyframes for the following animations:
     • Fade In/Out
     • Slide In/Out (from left, right, up, and down)
     • Scale In/Out

2. Updated SCSS Styles:

   • Integrated the new animations into the .up-window class.
   • Classes for triggering animations have been created:
     • .fade, .fade-out
     • .slide, .slide-out
     • .slide-up, .slide-up-out
     • .slide-down, .slide-down-out
     • .scale, .scale-out

3. CSS Structure:

   • The .up-window class has been organized to accommodate new animation classes without the prefix, while keyframe definitions retain the up-window- prefix for consistency and clarity.

[github-actions]

Visit the preview URL for this PR (updated for commit 5fe0348):

https://up-window-angular--pr2-animation-window-hsjiwklg.web.app

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[lucasferreiralimax]