Dark mode support in Readme

[devenes]

What would you like to be added?

I would like to propose the addition of an alternative logo with a white background to display in dark mode on GitHub, for Clusterpedia. This can be achieved by utilizing GitHub's Readme features, and I would be willing to contribute this feature through a pull request, should it be approved.

Why is this needed?

The reason for this proposed addition is that when using the default dark theme on GitHub, viewing the logo in the readme file becomes quite challenging, as it is not easily distinguishable from the dark background. By adding an alternative logo with a white background, it will be more visible and legible, and thus, provide a better user experience for users who prefer to use the dark theme on GitHub.

[clusterpedia-bot]

Hi @devenes,
Thanks for opening an issue!
We will look into it as soon as possible.

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