Uniformize folder structure (#693)

* Uniformize folder structure

* Fix icons

* Fix icons

* Fix tests

* Fix tests

front/src/modules/ui/navbar/components/MainNavbar.tsx

@@ -0,0 +1,21 @@
+import styled from '@emotion/styled';
+
+import NavItemsContainer from './NavItemsContainer';
+import NavWorkspaceButton from './NavWorkspaceButton';
+
+type OwnProps = {
+  children: JSX.Element;
+};
+
+const StyledContainer = styled.div`
+  width: 220px;
+`;
+
+export default function MainNavbar({ children }: OwnProps) {
+  return (
+    <StyledContainer>
+      <NavWorkspaceButton />
+      <NavItemsContainer>{children}</NavItemsContainer>
+    </StyledContainer>
+  );
+}