Switch to esbuild for faster builds and also to allow using more modern JavaScript syntax and features

[archmoj]

@plotly/plotly_js

TODOs:

• Fix regl_codegen
• Fix custom bundles
• Test new bundle in amdefine
• Test new bundle in requirejs
• Test new bundle in kaleido
• Test new bundle in orca
• additional QA on the python side on loading the bundle

[archmoj]

@alexcjohnson @gvwilson
This PR is ready to go 🚀

[gvwilson]

thank you - @marthacryan can you please have a look at this as well?

[archmoj]

I'm looking forward to @alexcjohnson's review on this as well. Also thanks to @marthacryan and @birkskyum reviews & contributions 🙏

This PR helps unblock Chart2Music keyboard and sound accessibility features in #6680. cc: @Coding-with-Adam

It might be a good idea and timing to include this in the upcoming RC release of [v2.35.0] (https://github.com/plotly/plotly.js/milestone/72) and our QA. cc: @gvwilson @ndrezn @LiamConnors

It would also help our ongoing and future development and testing of other pull requests. cc: @emilykl @antoinerg

[gvwilson]

I approve. Let's hold off on the merge until next week (feels too big to do on a Friday), but congratulations everyone - well done.

[ndrezn]

Super excited about this! This change will really improve the development experience for Plotly.js. Kudos 🥳

[Coding-with-Adam]

Wonderful news 🚀 . Thank you @archmoj; Thank you @marthacryan

[alexcjohnson]

💃 I'm super excited for this. Looks great!

[archmoj]

Thanks for the reviews!
Before merging this PR, I'd like to do additional QA on the python side on loading the bundle.

[birkskyum]

We'll need to configure esbuild to also allow require(file.css) because of:

• Inline maplibre css from node_modules #7140 (comment)

One option is here (esbuild-style-plugin), but there might be built-in support for this in esbuild:

• Add .css loader to esbuild #7142