[AC-1743] pt. 3 ⮕ Remove unused packages (#399)

* Remove package @angular/cli

* Remove package duo_web_sdk

* Remove package nodemon

* Remove package prebuild-install

* Remove package tapable

* Remove tsconfig-paths

* Remove ttypescript

* Remove typemoq

* Remove package jest-junit

* Remove package ts-node

* Specify dart sass in the webpack sass-loader config

* Add google-auth-library to package.json

* Add dotenv to package.json

* Ignore packages that break depcheck's regex and use case

Ignore @types/jest in depcheck

* Remove redundant config line

src/global.d.ts

@@ -1,3 +1,2 @@
 declare function escape(s: string): string;
 declare function unescape(s: string): string;
-declare module "duo_web_sdk";