Ninject DI now targets .Net Standard 2.0 and Ninject 3.3.4

[msnelling]

Description

The Ninject 4.0 branch looks completely dead with no commits since 2014 and the latest 3.3.x Ninject package now supports .Net Standard 2.0. The purpose of the PR is to update the RawRabbit.DependencyInjection.Ninject package to use the latest Ninject and as a result also the netstandard2_0 target framework.

Check List

• [x] All test passed.
• [ ] Added documentation (if applicable).
• [ ] Tests added to ensure functionality.
• [ ] Pull Request to stable branch.