Support for max_automatic_token_associations at contract.deploy()

[Kalina-Todorova]

As a user I'd like to be able to set the property for max automatic token associations somewhere within the deploy() method of a contract.

Reference for max_automatic_token_associations:
This property is supported both for accounts and contracts, but the documentation is not yet updated so I am linking the cryptocreate page for reference instead.

This is where the property should be populated. I am referencing it as a starting point.

[Kalina-Todorova]

Tracked in hashgraph/hethers.js#253