refactor(app): move react components to react codebase [EE-3179] (#6971)

app/react/components/buttons/AddButton.tsx

@@ -0,0 +1,27 @@
+import clsx from 'clsx';
+
+import styles from './AddButton.module.css';
+
+export interface Props {
+  className?: string;
+  label: string;
+  onClick: () => void;
+}
+
+export function AddButton({ label, onClick, className }: Props) {
+  return (
+    <button
+      className={clsx(
+        className,
+        'label',
+        'label-default',
+        'interactive',
+        styles.addButton
+      )}
+      type="button"
+      onClick={onClick}
+    >
+      <i className="fa fa-plus-circle space-right" aria-hidden="true" /> {label}
+    </button>
+  );
+}