Adds Open OnDemand to org member page

- Adds the Open OnDemand (OOO) logo to our repo
- Adds OOO to our organizational membership data file as a basic founding member

Author: exoticDFT

_data/org-members.yaml

@@ -1,4 +1,12 @@
 basic:
+  - name: "Open OnDemand"
+    url: https://openondemand.org/
+    figure: logo-open-ondemand.png
+    acronym: "OOO"
+    date_joined: 2025-04-10
+    founding_member: true
+    tier: "Basic"
+    contact: "Alan Chalker <[email protected]>"
 
 standard:
   - name: "Center for Research Computing - University of Notre Dame"