7.0.0

As part of this release we had 408 commits which resulted in 4 issues being closed.

Improvements

• #216 make Scalars internal
• #215 remove EfGraphQLConventions non IServiceCollection overloads
• #207 Suggestion: Add overload for RegisterInContainer that pulls the DbContext from the service provider
• #202 Suggestion: Allow nullable AddSingleField queries