feat(theme): provide non-minified theme

[shortcuts]

Summary

Users were not able to build create-react-app applications when using the autocomplete theme due to a postcss bug with the minified version. See #626 for more details.

We now provide a non-minified version of the theme as a workaround to prevent this issue.

Result

• The main file is still the minified version, but is now called theme.min.css
• The non-minified version is available at @algolia/autocomplete-theme-classic/dist/theme.css

Closes #626

[codesandbox-ci]

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Latest deployment of this branch, based on commit 69e26ca:

Sandbox	Source
@algolia/autocomplete-example-github-repositories-custom-plugin	Configuration
@algolia/autocomplete-example-instantsearch	Configuration
@algolia/autocomplete-example-playground	Configuration
@algolia/autocomplete-example-preview-panel-in-modal	Configuration
@algolia/autocomplete-example-react-renderer	Configuration
@algolia/autocomplete-example-starter-algolia	Configuration
@algolia/autocomplete-example-starter	Configuration
@algolia/autocomplete-example-voice-search	Configuration
@algolia/autocomplete-example-vue	Configuration

[Haroenv]

could also build and then push the output through a minifier, but this is more standalone