Add support to watch snapshot when loading from local or remote

[petruki]

Is your feature request related to a problem? Please describe.
Currently, both JS and Deno SDKs allow developers to add an option to watch snapshot file changes.
Instead of using Client.watch_snapshot() feature, enable it using Client.load_snapshot()

Describe the solution you'd like
Client.load_snapshot() currently allows an option argument that can include the watch snapshot flag.
This flag should trigger Client.watch_snapshot() feature.