add gel's logo (#1305)

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

Author: 3 people

src/content/sponsors/gel/display.png

@@ -0,0 +1,25 @@
+---
+name: "Gel"
+url: "https://www.geldata.com/"
+description:
+  "We build the database developers love to use. We're giving it to them with
+  the world's first graph-relational database: the maintainability of a strict
+  schema paired with the ability to easily link objects. We tie the whole thing
+  together with EdgeQL: a query language for those of us who couldn't tie a neck
+  tie to save our lives."
+socials:
+  linkedin: "https://www.linkedin.com/company/geldata/"
+  twitter: "https://x.com/geldata"
+  github: "https://github.com/geldata"
+  discord: "https://discord.gg/gel"
+  youtube: "https://www.youtube.com/@EdgeDB"
+tier: Platinum
+logo_padding: 10px
+draft: true
+---
+
+## About Gel
+
+Gel is a scalable, integrated data platform on top of Postgres. Gel gives the
+relational model a fresh facelift, solves n+1, simplifies migrations, and
+streamlines your entire database workflow. Gel is fully open source.