DapperLib/Dapper ? reverse-engineered prompt

Build me a small .NET library that makes working with SQL from C# feel much easier.

I want a simple object mapper for database connections, so I can write things like execute a command, query many rows into typed objects, query one row, and pass in parameters from a plain object or dictionary. It should support both sync and async calls, and let me choose buffered or streaming results.

Also include a few helpful companion pieces, like a tiny SQL builder for composing queries, some CRUD helpers, and a way to work with Entity Framework friendly extension methods. Keep it polished, fast, and easy to use in real projects.

Please make the solution clean, include tests, and set it up so it can be built and packaged like a proper open source library. If you need to check the latest .NET docs or best practices, go ahead and look them up online.