Tide Module Example Jupyter Notebook

[socoyjonathan]

Let me know if apps/geoclaw is the desired location for tide module!

[rjleveque]

apps/notebooks/geoclaw seems like a good place for this, but I think the same notebook is also in clawpack/tidal-examples#3? Maybe having this basic example both places makes sense, but might be harder to maintain.

I noted in that tidal-examples PR that two different versions of tide.py are used, and in this PR the local tide.py does not exist, so the first import statement fails and should presumably be replaced by
from clawpack.geoclaw import tide

[mandli]

We should figure out which makes more sense, having both is not a good idea. I had suggested to move the tide.py to GeoClaw itself rather than having it in the apps repository. We probably should just close the original PR in favor of the one that will use the module in GeoClaw.