feat(app): create react button component [EE-1948] (#6022)

Co-authored-by: Chaim Lev-Ari <chiptus@gmail.com>

app/portainer/components/Button/ButtonGroup.tsx

@@ -0,0 +1,29 @@
+import { PropsWithChildren } from 'react';
+import clsx from 'clsx';
+
+type Size = 'xsmall' | 'small' | 'large';
+export interface Props {
+  size?: Size;
+}
+
+export function ButtonGroup({
+  size = 'small',
+  children,
+}: PropsWithChildren<Props>) {
+  return (
+    <div className={clsx('btn-group', sizeClass(size))} role="group">
+      {children}
+    </div>
+  );
+}
+
+function sizeClass(size: Size | undefined) {
+  switch (size) {
+    case 'xsmall':
+      return 'btn-group-xs';
+    case 'large':
+      return 'btn-group-lg';
+    default:
+      return 'btn-group-sm';
+  }
+}