feat(website): add icons for donate buttons

apps/website/src/components/Button.tsx

@@ -0,0 +1,23 @@
+import { ComponentChildren } from "preact";
+import Icon from "./Icon";
+import "./Button.css";
+
+interface ButtonProps {
+    href?: string;
+    iconSvg?: string;
+    text: ComponentChildren;
+    openExternally?: boolean;
+}
+
+export default function Button({ href, iconSvg, openExternally, text }: ButtonProps) {
+    return (
+        <a
+            className="button"
+            href={href}
+            target={openExternally ? "_blank" : undefined}
+        >
+            {iconSvg && <><Icon svg={iconSvg} />{" "}</>}
+            {text}
+        </a>
+    )
+}