Updated build script

build.bat

@@ -1,4 +1,8 @@
 @echo Off
 dotnet restore
 dotnet pack "src\Discord.Net" -c "%Configuration%" -o "artifacts"
+dotnet pack "src\Discord.Net.Core" -c "%Configuration%" -o "artifacts"
+dotnet pack "src\Discord.Net.Rest" -c "%Configuration%" -o "artifacts"
+dotnet pack "src\Discord.Net.WebSocket" -c "%Configuration%" -o "artifacts"
+dotnet pack "src\Discord.Net.Rpc" -c "%Configuration%" -o "artifacts"
 dotnet pack "src\Discord.Net.Commands" -c "%Configuration%" -o "artifacts"