Add enterprisemodules support to website

Author: bastelfreak

_support/enterprise-modules.md

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+---
+logo: sponsor-enterprise-modules.png
+website: https://www.enterprisemodules.com/
+button: enterprisemodules.com
+---
+Enterprisemodules are the experts for automating complex software.
+They offer ready-to-use modules for IBM Db2, various Oracle database flavours, Oracle WebLogic, IBM MQ and more.
+Enterprisemodules are long time contributors to the ecosystem and provide support and custom development for Puppet and OpenVox.