Create a Helper Class to Initiate the Connection to the Azure SQL Database

[sohlae]

Describe the solution you'd like

• Create a folder under the RP.RepositoryPattern class library named Shared
• Create a helper class called ContextHelper.cs
• Create a method called GetConnectionString() and put the logic from connecting to Azure to getting the username and password inside this method.
• Update the Context classes of EF and SP to use this method instead of implementing their own logic

Additional context