[Console] Add Les-Tilleuls.coop as a backer of version 6.3

Author: nicolas-grekas

README.md

@@ -4,6 +4,18 @@ Console Component
 The Console component eases the creation of beautiful and testable command line
 interfaces.
 
+Sponsor
+-------
+
+The Console component for Symfony 6.3 is [backed][1] by [Les-Tilleuls.coop][2].
+
+Les-Tilleuls.coop is a team of 70+ Symfony experts who can help you design, develop and
+fix your projects. They provide a wide range of professional services including development,
+consulting, coaching, training and audits. They also are highly skilled in JS, Go and DevOps.
+They are a worker cooperative!
+
+Help Symfony by [sponsoring][3] its development!
+
 Resources
 ---------
 
@@ -18,3 +30,7 @@ Credits
 
 `Resources/bin/hiddeninput.exe` is a third party binary provided within this
 component. Find sources and license at https://github.com/Seldaek/hidden-input.
+
+[1]: https://symfony.com/backers
+[2]: https://les-tilleuls.coop
+[3]: https://symfony.com/sponsor