Topic/311 create metadata library

coscine/issues#311

src/Metadata/Properties/AssemblyInfo.cs

+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+[assembly: AssemblyTitle("Metadata")]
+[assembly: AssemblyDescription("Metadata is a part of the CoScInE group.")]
+[assembly: AssemblyCompany("IT Center, RWTH Aachen University")]
+[assembly: AssemblyProduct("Database")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyInformationalVersion("1.0.0.0")]
+[assembly: AssemblyCopyright("2019 IT Center, RWTH Aachen University")]
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