Add funding information and sponsorship details to README.md and create FUNDING.yml

Author: sylvain-guillet

.github/FUNDING.yml

@@ -0,0 +1,6 @@
+# GitHub Sponsors configuration
+# Add or adjust providers as needed. If your org/user is not yet in GitHub Sponsors, the button will appear once approved.
+# Docs: https://docs.github.com/sponsors/getting-started-with-github-sponsors/about-github-sponsors-for-open-source-contributors
+
+github: IO-Aerospace-software-engineering
+

README.md

@@ -266,6 +266,15 @@ console.log("Tools:", tools);
 // console.log(result);
 ```
 
+## Sponsor
+
+If this project helps your work, please consider sponsoring ongoing development, hosting, and data updates.
+
+- Sponsor page: https://github.com/sponsors/IO-Aerospace-software-engineering
+- Businesses: open an issue to discuss invoices or custom arrangements
+
+Your support helps keep the hosted server online and the SPICE data current.
+
 ## Troubleshooting
 
 ### Common Issues