Meta-table for every source

[ana-kuznetsova]

Create table with meta-data for every source in .tsv format. It should contain the following columns:

1. File path.
2. Name of source.
3. Date of publication.
4. Title.
5. Subtitle.
6. Author.
7. Rubric.
8. Tags.

Now put it into a new folder in our repo.

[nevmenandr]

corr:

1. File path

[nevmenandr]

add:

9. Original URL.