A note about data privacy (#497)

Data privacy-related note in the context of the third-party services used by the project

data-privacy-note.md

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+The CORD project and Community use third-party software and services
+for project management and community engagement. We are not
+responsible or liable for the privacy standards, practices, and
+policies implemented by such services.
+
+A list of currently used services and their privacy statements or
+policies is provided below to understand how they may collect
+information.
+
+* GItHub: [https://docs.github.com/en/github/site-policy/github-privacy-statement](https://docs.github.com/en/github/site-policy/github-privacy-statement)
+* YouTube: [https://policies.google.com/privacy](https://policies.google.com/privacy)
+* Zoom: [https://zoom.us/privacy](https://zoom.us/privacy)
+* Google Meet: [https://policies.google.com/privacy?hl=en](https://policies.google.com/privacy?hl=en)
+* Discord: [https://discord.com/privacy]([https://discord.com/privacy)