Add linq2db to list of supported ORMs

Linq2db just released v2.7.0 with MySqlConnector support

Signed-off-by: MaceWindu <[email protected]>

Author: MaceWindu

README.md

@@ -38,6 +38,7 @@ from Oracle.
 This library is compatible with popular .NET ORMs including:
 
 * [Dapper](https://stackexchange.github.io/Dapper/) ([GitHub](https://github.com/StackExchange/dapper-dot-net), [NuGet](https://www.nuget.org/packages/Dapper))
+* [Linq To DB](https://linq2db.github.io/) ([GitHub](https://github.com/linq2db/linq2db), [NuGet](https://www.nuget.org/profiles/LinqToDB))
 * [NReco.Data](https://www.nrecosite.com/dalc_net.aspx) ([GitHub](https://github.com/nreco/data), [NuGet](https://www.nuget.org/packages/NReco.Data))
 * [Paradigm ORM](http://www.paradigm.net.co/) ([GitHub](https://github.com/MiracleDevs/Paradigm.ORM), [NuGet](https://www.nuget.org/packages/Paradigm.ORM.Data.MySql/))
 * [ServiceStack.OrmLite](https://servicestack.net/ormlite) ([GitHub](https://github.com/ServiceStack/ServiceStack.OrmLite), [NuGet](https://www.nuget.org/packages/ServiceStack.OrmLite.MySqlConnector))