build(deps): upgrade to React 18

[eatyourgreens]

• Bump React to v18, along with any dependencies that rely on React 17.
• Remove @mui/styles, which is no longer supported.
• Switch from ReactDOM.render() to createRoot().render().
• Upgrade React types.
• Build with Node 20.
• npm update outdated packages.
• upgrade the MUI tree view to React 18 (and fix keyboard accessibility.)
• Run prettier. On second thoughts, that makes this way too noisy.
• towards Developer experience updates #5.

[eatyourgreens]

After the changes here, npm outdated is mostly major version bumps.

Package                      Current    Wanted    Latest  Location                                 Depended by
@loaders.gl/core              3.4.15    3.4.15     4.2.2  node_modules/@loaders.gl/core            frontend
@loaders.gl/wkt               3.4.15    3.4.15     4.2.2  node_modules/@loaders.gl/wkt             frontend
@types/jest                   27.5.2    27.5.2   29.5.12  node_modules/@types/jest                 frontend
@types/mapbox-gl             1.13.10   1.13.10     3.1.0  node_modules/@types/mapbox-gl            frontend
@types/node                 16.18.97  16.18.97  20.12.12  node_modules/@types/node                 frontend
deck.gl                       8.9.36    8.9.36    9.0.14  node_modules/deck.gl                     frontend
http-proxy-middleware          2.0.6     2.0.6     3.0.0  node_modules/http-proxy-middleware       frontend
immer                         9.0.21    9.0.21    10.1.1  node_modules/immer                       frontend
mapbox-gl                     1.13.3    1.13.3     3.3.0  node_modules/mapbox-gl                   frontend
openapi-typescript-codegen    0.21.0    0.21.0    0.29.0  node_modules/openapi-typescript-codegen  frontend
prettier                       2.8.8     2.8.8     3.2.5  node_modules/prettier                    frontend
react-map-gl                  5.3.21    5.3.21     7.1.7  node_modules/react-map-gl                frontend
react-router-dom               5.3.4     5.3.4    6.23.1  node_modules/react-router-dom            frontend
typescript                     4.9.5     4.9.5     5.4.5  node_modules/typescript                  frontend