Improve twitter scraper

[mdashlw]

Before you begin

• I understand my contributions may be rejected for any reason

• I understand my contributions are for the benefit of Derpibooru and/or the Philomena software

• I understand my contributions are licensed under the GNU AGPLv3

• [x] I understand all of the above

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Twitter images can be png, e.g.:

• https://twitter.com/ChaosAngelDesu/status/1071752621667565568
• api: https://api.fxtwitter.com/ChaosAngelDesu/status/1071752621667565568

large isn't the highest quality. that would be 4096x4096 or orig, e.g.:

• https://twitter.com/zokkili/status/1756303167158174101
• api: https://api.fxtwitter.com/zokkili/status/1756303167158174101
• https://pbs.twimg.com/media/GF-jwqxbsAAnS9G.jpg:large
• https://pbs.twimg.com/media/GF-jwqxbsAAnS9G.jpg:orig