Add Mantine-DataTable & Mantine-ContextMenu

Hey, I'm the author of [Mantine DataTable](https://icflorescu.github.io/mantine-datatable/) and [Mantine ContextMenu](https://github.com/icflorescu/mantine-contextmenu).
Please have a look at the two libraries and thanks in advance for accepting the PR.

Author: crazymetakow

README.md

@@ -144,6 +144,7 @@ Please review our [contributing guidelines](https://github.com/brillout/awesome-
 ### Table
 
 - [ka-table](https://github.com/komarovalexander/ka-table) - [demo](https://komarovalexander.github.io/ka-table/#/overview) - Customizable table component with sorting, filtering, grouping, virtualization, editing etc.
+- [mantine-datatable](https://github.com/icflorescu/mantine-datatable) - [demo/docs](https://icflorescu.github.io/mantine-datatable/) - Lightweight table component for Mantine UI applications, with lots of features
 - [material-table](https://github.com/mbrn/material-table) - [demo/docs](https://material-table.com/) - Built on Material UI, plus: grouping, tree data, expandable rows, export, inline editing
 - [mui-datatables](https://github.com/gregnb/mui-datatables) - Built on Material UI. Search, styling, filtering, resize/hide columns, export, print, select/expand rows.
 - [react-data-table](https://github.com/jbetancur/react-data-table-component) - [demo/docs](https://jbetancur.github.io/react-data-table-component/?) - accessible, responsive, themable, declaratively configurable table with sorting, selectable rows, expandable rows, pagination
@@ -202,6 +203,7 @@ _Menus / sidebars_
 - [react-burger-menu](https://github.com/negomi/react-burger-menu) - An off-canvas sidebar with effects and styles.
 - [react-offcanvas](https://github.com/vutran/react-offcanvas) - Off-canvas menus for React.
 - [react-planet](https://github.com/innFactory/react-planet) - [demo](https://innfactory.github.io/react-planet/) - Create circular menus which looks like planets.
+- [mantine-contextmenu](https://github.com/icflorescu/mantine-contextmenu) - [demo/docs](https://icflorescu.github.io/mantine-contextmenu/) - Context-menu hook/component for applications built with Mantine UI.
 
 ### Sticky