[FEAT] Add Component TextIterators

[mzcydev]

Currently, as I checked, only normal java.lang.String can be used for TextIterators. Would be nice to add Component support (finally), eh?

[mzcydev]

This would be my current SidebarTitle:

package dev.mzcy.minera.lobby.sidebar;

import me.catcoder.sidebar.text.TextIterator;

public class SidebarTitle extends TextIterator {

    private static final String TEXT = "MineraMC";
    private final String textAfterGradient;

    private int step = 0;

    public SidebarTitle(String textAfterGradient) {
        this.textAfterGradient = textAfterGradient;
    }

    @Override
    public String next() {
        String[] colors = {
                "#ff4dff",
                "#ff66ff",
                "#cc99ff",
                "#99ccff",
                "#66ffff"
        };

        StringBuilder builder = new StringBuilder("<gradient:");

        for (int i = 0; i < colors.length; i++) {
            int index = (i + step) % colors.length;
            builder.append(colors[index]);

            if (i != colors.length - 1) {
                builder.append(":");
            }
        }

        builder.append("><b>");
        builder.append(TEXT);
        builder.append("</b></gradient>");
        builder.append(textAfterGradient);

        step++;

        if (step >= colors.length) {
            step = 0;
        }

        return builder.toString();
    }
}