Adding transaction isolationlevel overloads

[lawrencek76]

Description

Adds overloads that take an isolationlevel and pass to the transaction being created.

Checklist

Please make sure your pull request fulfills the following requirements:

• [ ] Tests for any changes have been added (for bug fixes / features).
• [ ] Docs have been added / updated (for bug fixes / features).

Type

This pull request includes what type of changes?

• [ ] Bug.
• [x] Feature.
• [ ] Code style update (formatting, local variables).
• [ ] Refactoring (no functional changes, no api changes).
• [ ] Documentation content changes.
• [ ] Other (please describe below).

Breaking Changes

Does this pull request introduce any breaking changes?

• [ ] Yes
• [x] No

Any other comment

resolves #430

[lawrencek76]

@jonwagner Should SqlConnectionStringBuilderExtensions class be moved from the Insight.Database.Configuration project into Insight.Database.Providers.Default? I am not sure what other issues that may cause if any. This would allow adding the overloads of openwithtransaction that are sqlconnection specific to those extensions. Otherwise it looks like we would need to add a dependency to Insight.Database.Configuration from Insight.Database.Providers.Default and not sure how you would want to handle that.

[jonwagner]

Those dependencies could probably use a cleanup.

Now that the new sql package is Microsoft.Data.SqlClient, it's probably worth breaking out all of the providers and dependencies, and bump to version 7 so everyone can clean up all of the package refs. will look at all of this next.