add Qt's logo (#1351)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: hypha

src/content/sponsors/qt/index.md

@@ -0,0 +1,14 @@
+---
+name: Qt
+url: https://www.qt.io/
+socials:
+  linkedin: "https://www.linkedin.com/company/qtgroup/"
+  twitter: "https://twitter.com/qtproject"
+  youtube: "https://www.youtube.com/QtStudios"
+description:
+  "Qt is the leading independent technology for cross-platform development.
+  Create connected devices, UIs and applications that run anywhere on any
+  device, on any operating system at any time."
+tier: Patron
+logo_padding: 40px
+---