How to create my own custom nuget package for System.Data.SQLite to correctly include the interop dlls?

I want to create my own custom package for System.Data.SQLite. I have the all the dll's I need but I'm unsure how to structure it and create the nuspec for it.Current folder structure of the dll's is this, whereabouts would I put the different interop dlls to have them copied correctly to the output and what do I need to add to the nuspec?

lib/net452  -> System.Data.SQLite.dll , System.Data.SQLite.Linq.dll, System.Data.SQLite.EF6.dllCustom.SQLite.nuspec

Still have the default nuspec something like this atm

<?xml version="1.0"?><package xmlns="http://schemas.microsoft.com/packaging/2013/01/nuspec.xsd"><metadata minClientVersion="2.5"><id>Custom.SQLite.Name</id><version>1.0.0.0</version><authors>name</authors><owners>owner</owners><requireLicenseAcceptance>false</requireLicenseAcceptance><description>Desc</description><copyright>Copyright 2021</copyright></metadata></package>