feat: update svgr/webpack loader

[tk-o]

This PR replaces svgr/webpack loader with its latest version available in @svgr/webpack package.
The change solves #4798.

I tested this code change locally and it now reads custom config from i.e. .svgorc.json file (placed in the project root directory).

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[gregberge]

Upgrading to SVGR 2 should reduce dependency size. It is a major including a lot of breaking changes (especially the support of runtime configurations). That's why I think upgrading it before releasing create-react-app 2.0 is very important.

[Timer]

This is waiting on gregberge/svgr#179

[Timer]

Also, we need to disable prettier.

[Timer]

See #5062, thanks for your contribution @kopacki! I'll be sure to mention you in the release notes. 😄

[gregberge]

There is one more thing. SVGR latest requires the latest version of JSDOM, but it could work with the previous one. We should check if bundle size is not impacted by two versions of JSDOM (one for Jest and one for SVGR).

[gregberge]

SVGR v3 is out! You can now set runtimeConfig: false if you don't want to rely on it! More information -> https://github.com/smooth-code/svgr/releases/tag/v3.0.0

[Timer]

Neat, @neoziro! Thanks for the update.

It'd be really neat if the packages handling configuration, optimizing, and prettifying svgs could be decoupled from the main package so we're not bloating the dependency tree.

[gregberge]

@Timer I think it is already decoupled enough, "@svgr/core", "@svgr/cli", "@svgr/webpack"... I will not decouple it more.