Refactor and add full import export support

[alexogeny]

What changed

• Added support for detecting imports that use asType syntax
  • import {example as Example} -> import type { example as Example }
  • included two tests
• Added support for detecting locally declared types/interfaces: type example = string; export type example
  • type example = string; export example -> type example = string; export type example
  • included two tests
• Added more explicit type annotations (including LintContext type and return types that were missing)
• Added a getTypeDeclarations.ts to support linting for locally declared types/interfaces
• Added a helper function to avoid DRY badness when searching for aliased imports/exports in arrays/sets
• Interfaces used in tests are now properly Pascal-cased
• Some minor cleanups of files here and there

Why

• The lint plugin had no support for types that are aliased using asType syntax
• The plugin didn't support types that were locally declared and then not explicitly exported as types
• There were multiple usages of any type annotations which is discouraged
• Interfaces should be Pascal-cased

Todo:

• [ ] Add Semantic Version Label
• [x] Add tests
• [ ] Add docs

[alexogeny]

One more minor regression to fix before I can mark this as ready.

[alexogeny]

Running through our codebase I missed another scenario. Marking as draft.