Attribute template core class implementation
Created by: williamfgc
Added support for Attributes in ADIOS2 API including testing. It basically follows the Variable design. To do (on a separate branch): Write Attributes in BP buffer format
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Created by: williamfgc
Added support for Attributes in ADIOS2 API including testing. It basically follows the Variable design. To do (on a separate branch): Write Attributes in BP buffer format