Add the new function that returns the Bitcoin address based on the
script pub key placed on the output of a Bitcoin transaction.

The `scriptPubKey` is a field specific to transaction outputs but
basically, this function converts any script to a Bitcoin address. Here
we make this function more generic and rename to
`createAddressFromOutputScript`.

Rename `scriptPubKey` to `script` and update docs. The `scriptPubKey` is
a field specific to transaction outputs but basically, this function
converts any script to a Bitcoin address. Here we also update type of
this param to `Hex` instead of `string`.