Add support for React 18

[nstepien]

https://reactjs.org/blog/2021/06/08/the-plan-for-react-18.html

[codecov]

Codecov Report

Merging #2459 (87362b4) into main (2b402e8) will decrease coverage by 0.08%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2459      +/-   ##
==========================================
- Coverage   96.23%   96.15%   -0.09%     
==========================================
  Files          38       38              
  Lines        1247     1247              
  Branches      393      393              
==========================================
- Hits         1200     1199       -1     
- Misses         47       48       +1     

Impacted Files	Coverage Δ
src/DataGrid.tsx	94.23% <0.00%> (-0.21%)	⬇️

[nstepien]

Before we go forward with this:

• wait for the @types packages to be updated
• resolve test warnings
• wait for @testing-library/react to graduate from alpha
• Incompatible with React 18 pmmmwh/react-refresh-webpack-plugin#621
• should we drop support for React 16/17? We don't have the capacity to support them.

[amanmahajan7]

should we drop support for React 16/17? We don't have the capacity to support them.

We may be able to support as we are not using any react 18 features yet

[nstepien]

Seeing as we already have types for createRoot when imported from react-dom/client, let's go forward with this.

[nstepien]

We have +1 missed line in the coverage for some reason. Do we have a test for this specific line?
https://app.codecov.io/gh/adazzle/react-data-grid/compare/2459/changes