Add groups support (#146)

Reviewed-on: #146

remote_frontend/src/hooks/providers/ThemeProvider.tsx

@@ -20,7 +20,7 @@ type ThemeContext = { theme: Theme; set: (theme: Theme) => void };
 const ThemeContextK = React.createContext<ThemeContext | null>(null);
 
 export function ThemeProvider(p: React.PropsWithChildren): React.ReactElement {
-  const [theme, setTheme] = React.useState<Theme>("highcontrast");
+  const [theme, setTheme] = React.useState<Theme>("teamsdark");
 
   let fluentTheme = teamsHighContrastTheme;
   switch (theme) {