Lens restructure (#540)

Signed-off-by: Roman <ixrock@gmail.com>

src/renderer/components/spinner/spinner.tsx

@@ -0,0 +1,28 @@
+import './spinner.scss'
+
+import React from 'react'
+import { cssNames } from "../../utils";
+
+interface Props extends React.HTMLProps<any> {
+  singleColor?: boolean;
+  center?: boolean;
+}
+
+export class Spinner extends React.Component<Props, {}> {
+  private elem: HTMLElement;
+
+  static defaultProps = {
+    singleColor: true,
+    center: false,
+  };
+
+  render() {
+    const { center, singleColor, ...props } = this.props;
+    let { className } = this.props;
+    className = cssNames('Spinner', className, {
+      singleColor: singleColor,
+      center: center,
+    });
+    return <div {...props} className={className} ref={e => this.elem = e}/>;
+  }
+}