docs(showcase): Fix logos for ScalarDB and ScalarDL in showcase (#2317)

* docs(showcase): Delete scalardl.svg

* docs(showcase): Delete scalardb.svg

* docs(showcase): Create scalar.svg

* docs(showcase): Change Scalar icon

Author: josh-wong

packages/website/src/components/showcase-projects.json

@@ -231,12 +231,12 @@
   },
   {
     "name": "ScalarDB",
-    "image": "img/logos/scalardb.svg",
+    "image": "img/logos/scalar.svg",
     "href": "https://scalardb.scalar-labs.com/docs/"
   },
   {
     "name": "ScalarDL",
-    "image": "img/logos/scalardl.svg",
+    "image": "img/logos/scalar.svg",
     "href": "https://scalardl.scalar-labs.com/docs/"
   }
 ]