[c#] Add publishing step to .NET Core build
[c#] Add publishing step to .NET Core build

This collects up all the assemblies needed in one directory tree,
similar to the copying that is done for targets with
$BondRedistributable==true by the MSBuild's Common.Internal.targets

tstein/bond,jdubrule/bond,jdubrule/bond,tstein/bond,Microsoft/bond,jdubrule/bond,sapek/bond,chwarr/bond,jdubrule/bond,sapek/bond,Microsoft/bond,sapek/bond,Microsoft/bond,jdubrule/bond,Microsoft/bond,sapek/bond,tstein/bond,Microsoft/bond,chwarr/bond,tstein/bond,gencer/bond,tstein/bond,chwarr/bond,gencer/bond,Microsoft/bond,chwarr/bond,gencer/bond,sapek/bond,chwarr/bond,jdubrule/bond,chwarr/bond,sapek/bond,gencer/bond,gencer/bond,tstein/bond