M #-: Append ACK to Readme file

Added project acknowledgements in the Readme file.

README.md

@@ -61,4 +61,10 @@ Please refer to [LICENSE](./LICENSE).
 
 ## References
 
-Other Projects about Terraform provider exists. This project has been inspired by [Runtastic](https://github.com/runtastic/terraform-provider-opennebula) and [BlackBerry](https://github.com/blackberry/terraform-provider-opennebula) projects.
+Other Projects about Terraform provider exist. This project has been inspired by [Runtastic](https://github.com/runtastic/terraform-provider-opennebula) and [BlackBerry](https://github.com/blackberry/terraform-provider-opennebula) projects.
+
+## Acknowledgements
+
+Some of the software features included in this repository have been made possible through the funding of the following innovation projects:
+
+* [ONEnextgen](http://onenextgen.eu/) (Grant Agreement UNICO IPCEI-2023-003), supported by the Spanish Ministry for Digital Transformation and Civil Service through the UNICO IPCEI Program, co-funded by the European Union – NextGenerationEU through the Recovery and Resilience Facility (RRF).