/utils: provide `Object` generics

[mindrones]

• investigate which functions of [1] are not covered by existing functions in lamb or @svizzle/utils

  • for those having a correspondent function in @svizzle/utils [2], make sure they have @see pointing to the correspondent Object method

  • provide the missing ones as generics with tests as usual so that we can see how they work

• for all of them, make sure their name explicitly refer to a object input

(if needed, split this task in 2+ PRs)

[1] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object