Implement linter support for .NET Core

[gabenegron]

Description

As a user of seCureLI, I want the ability to configure a .NET Core linter in my pre-commit hooks of my repo, so that I can ensure that my code base is scanned prior to any commits going through.

Technical Details

• Pre-Commit hooks are installed/configured after the language is detected as the primary language in the repo
• command: secureli init
• Linter to use: TBD

Acceptance Criteria

• Pre-commit hooks are configured and config is stored in the repo under /.secureli/config when a .NET Core repo is detected.
• If there are any failing linting issues, per the list above, when a commit is attempted the commit is blocked and an error with details is displayed to the user.
• Readme & internal help is updated with supporting language info

[JordoHeffernan]

Previous spike indicated may be some tools to help port python code to .net. Not include as extension but how to run securli from CLI for .NET core project.