chore(README): Add NLnet funding acknowledgement (#977)

Author: aapoalas

README.md

@@ -124,6 +124,16 @@ but the slightly modified slides are.
 TC39 slides:
 [Google Drive](https://docs.google.com/presentation/d/1Pv6Yn2sUWFIvlLwX9ViCjuyflsVdpEPQBbVlLJnFubM/edit?usp=drive_link)
 
+## Funding
+
+This project received funding through [NGI Zero Core](https://nlnet.nl/core), a
+fund established by [NLnet](https://nlnet.nl) with financial support from the
+European Commission's [Next Generation Internet](https://ngi.eu) program. Learn
+more at the [NLnet project page](https://nlnet.nl/project/Nova).
+
+[<img src="https://nlnet.nl/logo/banner.png" alt="NLnet foundation logo" width="20%" />](https://nlnet.nl)
+[<img src="https://nlnet.nl/image/logos/NGI0_tag.svg" alt="NGI Zero Logo" width="20%" />](https://nlnet.nl/core)
+
 ## [Contributing]
 
 So you wish to contribute, eh? You're very welcome to do so! Please take a look