Provide examples on how to create/edit a LiPD file

[khider]

5 tutorials:

• Using OOP and the new classes directly
• From a Pandas Dataframe with minimum information (such as the one generated by get_timeseries_essentials)
• From JSON (editing a JSON file directly or a JSON dictionary in Python) - Only useful for editing. Creating from scratch would be difficult
• Excel template (note this is not the preferred template but showcases how to use a templated file to LiPD) - Most useful to create LiPD files from scratch