Add notebook to look at parquet size distribution

[delucchi-cmu]

Change Description

Documentation notebook for inspecting the size of all catalog parquet files on disk to understand the distribution.

Code Quality

• I have read the Contribution Guide
• My code follows the code style of this project
• My code builds (or compiles) cleanly without any errors or warnings
• My code contains relevant comments and necessary documentation

[olivialynn]

Looks good!

[smcguire-cmu]

Thanks!