Add icon fill color support

[s3rgiosan]

Description of the Change

This PR adds a new "Icon color" setting, allowing editors to control the SVG fill color. It also removes text color support, as it's redundant in this icon-specific context.

Before

After

How to test the Change

Changelog Entry

Added - fillColor support with Icon color settings

Credits

Props @s3rgiosan

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added Critical Flows, Test Cases, and/or End-to-End Tests to cover my change.
• All new and existing tests pass.

[dkotter]

@s3rgiosan Apologies for the ping here after this is already merged but in doing final testing today in advance of doing a release (#263) I noticed that if I set a custom icon color, that shows properly in the editor but doesn't show on the front-end (which I must have missed when testing this previously).

It seems on the front-end (in register.php) we still use the textColor attribute, which no longer exists and needs updated to I believe iconColor. In addition, wondering if we need to consider supporting sites that did previously have textColor set, instead of just replacing that with iconColor. Basically wondering if we need a fallback to look at textColor first and use it if it exists and if not, fallback to iconColor?

Wondering if you have time to open a new PR to address this to help unblock the release?

[s3rgiosan]

@dkotter I'll work on a fix as soon as possible

[s3rgiosan]

@dkotter This was addressed here.

I reverted the change that added the icon color. While using the icon color makes more sense than relying on the text color for the SVG, the goal here was to unblock this release. We can revisit and properly add icon color support later, including fallback to text color.

Let me know if you'd prefer to hold off and address the icon color implementation before releasing the new version.