eslint-config: Add autofix for type-only imports

[nhardy]

Adds lint rules:

• @typescript-eslint/consistent-type-imports - forces us to annotate type-only imports as such
• @typescript-eslint/no-import-type-side-effects - forces an import with only type imports to have a top-level import type - if side effects are required, this should be specified with an explicit side effect import, e.g. import "path/to/side-effect";

Also replaces unmaintained babel-plugin-lodash

[coveralls]

coverage: 82.059%. remained the same
when pulling 38742e7 on feature/eslint-config-type-only-import-autofix
into 057b748 on master.

[willdawsonme]

Looks good!