[CLA] Add Aardug CLA

Part-of: odoo/odoo#127527

doc/cla/corporate/aardug.md

+Netherlands, 2023-07-05
+
+Aardug agrees to the terms of the Odoo Corporate Contributor License
+Agreement v1.0.
+
+I declare that I am authorized and able to make this agreement and sign this
+declaration.
+
+Signed,
+
+Jort ten Donkelaar jort@aardug.eu https://github.com/jort-aardug
+
+List of contributors:
+
+Jort ten Donkelaar jort@aardug.eu https://github.com/jort-aardug
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