Adding DataFrames output to SeisHeaderInfo

[AtilaSaraiva]

This PR returns the information gathered by SeisHeaderInfo to a DataFrame, a spreadsheet-like data format. This can help the user have the information used in the script.

I also made a few formating changes to the function.

[msacchi]

nice feature if you can produce a nice organize table of headers to qc imput data.-:)

[AtilaSaraiva]

Hey Mauricio, thx for the review!

Do you mean a table with the full header instead of just the mean, max and min in a table? If you want I can create a function that transforms the header into a table or we can make it the default.

[msacchi]

Some summary as min/max mean is sufficient like SU does with surange.

[AtilaSaraiva]

in that case this is what the code is doing! It returns a table with type DataFrame