renamed all xsd files from v1_11_0 to v1_12_0

v1_12_0/CDT-AE-v1_12_0.xsd

v1_12_0/CDT-CSEBase-v1_12_0.xsd

v1_12_0/CDT-accessControlPolicy-v1_12_0.xsd

v1_12_0/CDT-activeCmdhPolicy-v1_12_0.xsd

v1_12_0/CDT-areaNwkDeviceInfo-v1_12_0.xsd

v1_12_0/CDT-areaNwkInfo-v1_12_0.xsd

v1_12_0/CDT-battery-v1_12_0.xsd

v1_12_0/CDT-cmdhBuffer-v1_12_0.xsd

v1_12_0/CDT-cmdhDefEcValue-v1_12_0.xsd

v1_12_0/CDT-cmdhDefaults-v1_12_0.xsd

v1_12_0/CDT-cmdhEcDefParamValues-v1_12_0.xsd

v1_12_0/CDT-cmdhLimits-v1_12_0.xsd

v1_12_0/CDT-cmdhNetworkAccessRules-v1_12_0.xsd

v1_12_0/CDT-cmdhNwAccessRule-v1_12_0.xsd

v1_12_0/CDT-cmdhPolicy-v1_12_0.xsd

v1_12_0/CDT-commonTypes-v1_12_0.xsd

v1_12_0/CDT-container-v1_12_0.xsd

v1_12_0/CDT-contentInstance-v1_12_0.xsd

v1_12_0/CDT-delivery-v1_12_0.xsd

v1_12_0/CDT-deviceCapability-v1_12_0.xsd