Add FusionSky style and Fixes

[amjadr360]

This PR:

• Adds FusionSky style variation: Introducing the FusionSky style variation, a versatile and contemporary design tailored for modern corporate websites. This visually engaging theme is ideal for industries such as finance, banking, consulting, and other professional services.
• Optimizes headers with center logo: Site title removed for a cleaner look.
• Enhanced WooCommerce input consistency and deprecated custom button style for WooCommerce buttons as version 7.0.1 now supports style variation's button style.
• Refines search block style: Aligns visual design with overall UI.
• Expanded button styles and interactivity in all style variations: Added hover, focus, and active effects to buttons, enhancing their visual appeal and user interaction.

How to test it best:

• Activate FusionSky style: Enable the FusionSky style variation and examine your website for a seamless design and consistent appearance.
• Search block: Insert the search block onto a page and evaluate its visual integration and alignment with the overall style.
• Evaluate button interactivity: Previously, buttons lacked noticeable hover effects. Insert the button block onto a page Interact with buttons to check the newly added hover, focus, and active effects, ensuring an improved visual appeal and user experience.

[clubkert]

Generally, this looks good to me in my testing.

Evaluate button interactivity: Previously, buttons lacked noticeable hover effects. Insert the button block onto a page Interact with buttons to check the newly added hover, focus, and active effects, ensuring an improved visual appeal and user experience.

One thing I noticed was that the secondary button didn't seem to have a hover effect. Just the primary. Is that intentional?

I also noticed two instances where the hover color made the button itself difficult to see.

The Kong Kong variation is the most extreme:

Cairo is not as bad. Maybe it's fine. What do you think?

[amjadr360]

One thing I noticed was that the secondary button didn't seem to have a hover effect. Just the primary. Is that intentional?

The secondary button (Outline button style) is a variation of the button. Right now, by default, WordPress does not support the hover effect for the Outline button style. Yes, it's a good idea to add the hover effect for the secondary button, So we add the hover effect through custom CSS.

https://user-images.githubusercontent.com/32260742/229037275-895d17d1-6948-4510-b7a1-89450bea3792.mp4

The Kong Kong variation is the most extreme:

Fixed

Cairo is not as bad. Maybe it's fine. What do you think?

It's fine, but I think it will not meet accessibility guidelines. Updated the hove color to white.

[amjadr360]

@clubkert, Made some tweaks based on your feedback. Could you please review the changes once more?

[clubkert]

Looks good to me.