[CLA] signature for Highcooley

Done at #23785

doc/cla/individual/highcooley.md

+Switzerland, 2018-03-20
+
+I hereby agree to the terms of the Odoo Individual Contributor License
+Agreement v1.0.
+
+I declare that I am authorized and able to make this agreement and sign this
+declaration.
+
+Signed,
+
+Andreas Hochuli a.hochuli@hispeed.ch https://github.com/Highcooley