[charts] Export plugins

[alexfauquette]

Alternative solution is #19336

Before reviewing this PR, might be better to agree on the DX in #19343

We are moving with the following steps:

• First the one you already did in the other PR, export from file
• Then change import references in a new PR
• Change file locations in a last PR

[mui-bot]

Deploy preview: https://deploy-preview-19335--material-ui-x.netlify.app/

Bundle size report

Bundle	Parsed size	Gzip size
@mui/x-data-grid	0B(0.00%)	0B(0.00%)
@mui/x-data-grid-pro	0B(0.00%)	🔺+5B(0.00%)
@mui/x-data-grid-premium	0B(0.00%)	🔺+4B(0.00%)
@mui/x-charts	🔺+156B(+0.05%)	▼-371B(-0.39%)
@mui/x-charts-pro	🔺+198B(+0.05%)	🔺+54B(+0.05%)
@mui/x-date-pickers	0B(0.00%)	0B(0.00%)
@mui/x-date-pickers-pro	0B(0.00%)	🔺+7B(+0.01%)
@mui/x-tree-view	0B(0.00%)	0B(0.00%)
@mui/x-tree-view-pro	0B(0.00%)	🔺+3B(+0.01%)

Details of bundle changes

Generated by 🚫 dangerJS against 545e414

[codspeed-hq]

CodSpeed Performance Report

Merging #19335 will not alter performance

_{Comparing alexfauquette:export-plugins-2 (545e414) with master (90d94c7)¹}

Summary

✅ 10 untouched benchmarks

Footnotes

1. No successful run was found on master (22c79bb) during the generation of this report, so 90d94c7 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩