Repository: traefik/traefik (language: go)

Issue:
Improve render of the logo in GitHub dark mode
### Welcome!

- [X] Yes, I've searched similar issues on [GitHub](https://github.com/traefik/traefik/issues) and didn't find any.
- [X] Yes, I've searched similar issues on the [Traefik community forum](https://community.traefik.io) and didn't find any.

### What did you expect to see?

The readme has the traefik logo icon which is awesome
but my thoughts are that it's visibility is affected on dark mode and also feels low res
If we switched to a png with a background there it would look nicer and high res.


![image](https://github.com/traefik/traefik/assets/70265851/a8182bdd-5ecc-4605-9c96-0a691cb0b988)



Discussion / hints:

Fix patch:
diff --git a/README.md b/README.md
index 318a05569e..ea0298fbd0 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,10 @@
 
 <p align="center">
-<img src="docs/content/assets/img/traefik.logo.png" alt="Traefik" title="Traefik" />
+    <picture>
+      <source media="(prefers-color-scheme: dark)" srcset="docs/content/assets/img/traefik.logo-dark.png">
+      <source media="(prefers-color-scheme: light)" srcset="docs/content/assets/img/traefik.logo.png">
+      <img alt="Traefik" title="Traefik" src="docs/content/assets/img/traefik.logo.png">
+    </picture>
 </p>
 
 [![Build Status SemaphoreCI](https://semaphoreci.com/api/v1/containous/traefik/branches/master/shields_badge.svg)](https://semaphoreci.com/containous/traefik)
diff --git a/docs/content/assets/img/traefik.logo-dark.png b/docs/content/assets/img/traefik.logo-dark.png
new file mode 100644
index 0000000000..8b09350e36
Binary files /dev/null and b/docs/content/assets/img/traefik.logo-dark.png differ


Test patch: