Add support for reading archives

[turicas]

In #108 we're going to add support for compressed files and then we also need to support archive files, such as .tar, .zip, .rar.

• [ ] Change rows.utils.compress and rows.utils.decompress functions to also support archives
• [ ] Change rows.cli to parse filenames, identify archives and then call compress/decompress (could use something like this: filename.zip::path/to/file.csv).
• [ ] Bonus: recursively support archived files, example: filename.zip::path/to/file.rar::other/path/file.csv.

[turicas]

We can use magic numbers to check file contents:

In [14]: open('projects/eleicoes-brasil/data/download/candidatura-2018.zip', mode='rb').read(4).startswith(b'PK')
Out[14]: True

In [15]: open('Downloads/prestacao-contas-2002.zip', mode='rb').read(4).startswith(b'Rar!')
Out[15]: True

For RAR archives we can use rarfile library (needs external tool to extract files, on Debian systems: apt install libarchive-tools ou apt install unrar - the last is not free/libre).