Add .ohwr.yaml

.ohwr.yaml

+---
+# SPDX-FileCopyrightText: 2024 CERN (home.cern)
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
+version: '1.0.0'
+name: 'VME64x core'
+description: 'https://ohwr.org/project/vme64x-core/wikis/home'
+website: 'https://ohwr.org/project/vme64x-core'
+images:
+  - '/uploads/c9c5d9563f3db625faa7bc2d4ab10051/VME64x_BlockDiagram2.png'
+documentation: 'https://ohwr.org/project/vme64x-core/wikis'
+issues: 'https://ohwr.org/project/vme64x-core/issues'
+newsfeed: 'https://ohwr.org/project/vme64x-core/wikis/news'
+