Replace home-made types for dependency `tween-functions` with types from DefinitelyTyped

[anddoutoi]

Issue

This package depends on tween-functions. Today the types for tween-functions are home-made and defined in ./types/tween-functions.d.ts.

These should be replace with the official types from DefinitelyTyped.

Suggestion

rpm install --save-dev @types/tween-functions, delete ./types/tween-functions.d.ts and update tsconfig.json.

Risks

• An upgrade of typescript package might be needed. It might lead to an upgrade cascade of other packages. If that is the case this issue should be postponed and escalated within the team.