[senateisvp] Updated senateisvp extractor to support new manifest urls

[jsmnhou]

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• Searched the bugtracker for similar pull requests
• Read adding new extractor tutorial
• Read youtube-dl coding conventions and adjusted the code to meet them
• Covered the code with tests (note that PRs without tests will be REJECTED)
• Checked the code with flake8

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What is the purpose of your pull request?

• Bug fix
• Improvement
• New extractor
• New feature

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Description of your pull request and other information

The senate.gov extractor has been broken as per #31373. This is because the locations of the m3u8 files had been moved to different URLs, and the format of these URLs have also changed. The extraction of these formats can be found here.

Note: This is a continuation of this pull request.

Depending on the video, there are four possible locations for the m3u8 to be located at:

• https://www-senate-gov-media-srs.akamaized.net/hls/live/{stream_id}/{committee}/{filename}/master.m3u8
• https://www-senate-gov-msl3archive.akamaized.net/{msl3}/{filename}_1/master.m3u8
• {stream_domain}/i/{filename}_1@{stream_number}/master.m3u8
• https://ussenate-f.akamaihd.net/i/{video_id}

The above parameters are found in the following places:

• committee, filename - query parameters in the URL
• stream_number, stream_domain, stream_id, msl3 - a js table variable called streamInfo which has been hardcoded as a python list in senateisvp.py

The new extractor will grab the parameters from the url and the lookup table, then iterate through the possible locations for the m3u8, returning it and its information when found.

[jsmnhou]

@dirkf, are there any changes I can make to speed up the pull request process?