Feature: Rename NuGet packages

[rent-a-developer]

Rename the NuGet packages of this project as following:

• RentADeveloper.DbConnectionPlus > DbConnectionPlus
• RentADeveloper.DbConnectionPlus.DatabaseAdapters.MySql > DbConnectionPlus.DatabaseAdapters.MySql
• RentADeveloper.DbConnectionPlus.DatabaseAdapters.Oracle > DbConnectionPlus.DatabaseAdapters.Oracle
• RentADeveloper.DbConnectionPlus.DatabaseAdapters.PostgreSql > DbConnectionPlus.DatabaseAdapters.PostgreSql
• RentADeveloper.DbConnectionPlus.DatabaseAdapters.Sqlite > DbConnectionPlus.DatabaseAdapters.Sqlite
• RentADeveloper.DbConnectionPlus.DatabaseAdapters.SqlServer > DbConnectionPlus.DatabaseAdapters.SqlServer