added types for scraping and fixed a bug that would make exporter to …

[vhdmsm]

There was a bug related to "config.ini" file that would cause telegram-exporter to not work on macOS:

import: delegate library support not built-in '' (X11) @ error/import.c/ImportImageCommand/1297.
/Users/vahid/miniconda3/bin/telegram-export: line 2: syntax error near unexpected token `"telegram_export",'
/Users/vahid/miniconda3/bin/telegram-export: line 2: `runpy.run_module("telegram_export", run_name="__main__", alter_sys=True)'

I've added a condition to search for the "config.ini" file in the workspace and it solved the problem.

Also I've added type specification (channel, group, user) for exporting.