* fix: fav icon is fixed and bootstrap is removed

* fix: return type is updated for the global time reducer

* fix: theme.css is replaced with .min.css

* update: useThemeSwitcher is removed from the graph component and value is grabed from the reducer

* update: instrumentation page is updated

* update: react-css-theme-switcher package is removed

* update: darkMode is updated

* fix: Sider component is updated