Implement channel_info command

[aninhasalesp]

Add ChannelInfo Command

Overview

This PR introduces the ChannelInfo command, designed to fetch and save YouTube channel information. The command supports multiple input methods (direct URLs/usernames or CSV files) and outputs the data to a CSV file.

Features

• Command Implementation: ChannelInfo command for retrieving YouTube channel information.
• Execute method: to manage the entire process of fetching channel information and generating CSV output.
• Introduced parse_arguments: method for configuring argument parsing and setting execute as the default action.
• Input Flexibility: Accepts YouTube channel URLs, usernames, or paths to CSV files containing them.
• Customizable Output: Allows specifying which columns to include in the output CSV file.
• Helper Methods: Includes a filter_fields method to filter the channel information based on specified columns.

Usage

To use the new ChannelInfo command:

1. The command was designed to extract the YouTube channel_info associated with a provided URL:

python cli.py --api_key <api_key> channel-info --url <url> 

2. These are other ways to run the ChannelInfo command:

• This command allows you to provide multiple URLs and usernames to obtain information on YouTube channels.

python cli.py --api-key <api_key> channel-info --urls <url1> --username <usernames>

• This command is similar to the previous one but also includes the option to specify an output file to store the results.

python cli.py --api-key <api_key> channel-info --urls <url1> --username <usernames> --output-file-path <output_path>