Fix issues with ESLint Import Resolver

[ampersarnie]

Description

Fixes issues that have resulted in the implementation of the following changes when all brought into a single branch:

• Add unit and integration tests #67
• Alter eslint config to not use function #97
• TypeScript Support #90

The change to the way ESLint config is used and implemented in the current release is not managed the same way in the proposed 1.3 release, meaning there has been a conflict in process for generating that ESLint config. TypeScript will need to set the project and accurate directory mappings for the TypeScript Resolver in the ESLint config to ensure the that the correct directories are being targeted. As a result of the changes, these mappings were incorrect in active use and in unit testing were partly non-existant.

Change Log

• Adds missing scoped vars from test cases.
• Changes project paths config to own file.
• Changes ESLint Resolver config to create a fallback when a path config is not passed.
• Adds config for ignore rules in Jest tests.