More than types

[EliasEriksson]

• Added interface for Stack.
• Added interface for Vector.
• Added abstract base class for Collection.
• Added Array type helpers UnionValues<T> and OmitFirst<T>.
• Added IterableWeakMap class implementation as suggested by tc39.
• Added IterableWeakSet class derived from iterableWeakMap implementation.
• Added Object type helpers: DotNotation<T>, KeyOf<T>, ValueOf<T> and RemoveMethods<T>.
• Added new Object function: map(...), reduce(...), filter(...) and mapValues(...).
• Added versions of Object.entries(...), Object.fromEntries(...) and Object.keys(...) where the key is typed as keyof T rather than string.
• Added String function capitalize(...)
• Added Promise helper functions lazy(...) and awaitLatest(...)