Better document helper SDK functionality

[Reccetech]

Problem

We have a lot of cool functionality in the SDK that remains essentially undocumented and hidden. Two examples I ran across today was the toEVMAddress function and the toStringRaw functionality which lack any documentation as far as I can see.

Solution

At a minimum I think we should have a 1 or 2 line description of functionality in the @hashgraph/sdk self generated SDK docs like here.
As a next step we maybe could have some simple content in docs on the functions available. For instance the two I mentioned above are very useful when dealing with ECDSA keys and accounts.

Alternatives

No response