Add eslint-plugin-import as a peerDependency to rules

[aljones15]

This is an amazing plugin with a long history:

https://www.npmjs.com/package/eslint-plugin-import

probably 100% worth it, but need consensus on this one.

[aljones15]

Bumping this issue as we are now supporting es6 imports in bedrock, so this means rules such as:

Ensure imports point to a file/module that can be resolved. (no-unresolved)
Ensure named imports correspond to a named export in the remote file. (named)
Ensure a default export is present, given a default import. (default)
Ensure imported namespaces contain dereferenced properties as they are dereferenced. (namespace)
Restrict which files can be imported in a given folder (no-restricted-paths)
Forbid import of modules using absolute paths (no-absolute-path)
Forbid require() calls with expressions (no-dynamic-require)
Prevent importing the submodules of other modules (no-internal-modules)
Forbid webpack loader syntax in imports (no-webpack-loader-syntax)
Forbid a module from importing itself (no-self-import)
Forbid a module from importing a module with a dependency path back to itself (no-cycle)
Prevent unnecessary path segments in import and require statements (no-useless-path-segments)
Forbid importing modules from parent directories (no-relative-parent-imports)
Prevent importing packages through relative paths (no-relative-packages)

Are suddenly super useful. I would like to see no-unresolved immediately.