Create OPEN-SOURCE-CONTRIBUTIONS.md (#582)

OPEN-SOURCE-CONTRIBUTIONS.md

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+# Open Source Contributions
+
+This document serves as a record of occasions where the development and enhancements made in this repository have positively fed back into and contributed to other open source projects. It shall be a testament to and an encouragement for the collaborative nature of open source development and the broader impact of our work.
+
+Template:
+
+- [Project Name](Project Link) - (Date of Contribution)
+  - Description of the contribution and its impact.
+  - [PR](PR Link) 
+  - ...
+
+---
+
+- [WebGLVolumeRendering](https://github.com/lebarba/WebGLVolumeRendering) - (Jul 15, 2023)
+  - Support for non-cube datasets in a WebGL volumetric rendering library.
+  - [PR](https://github.com/lebarba/WebGLVolumeRendering/pull/10)