User Labels

In August of 2020 Twitter started to label the accounts of government
officials and state-affiliated media entities:

https://blog.twitter.com/en_us/topics/product/2020/new-labels-for-government-and-state-affiliated-media-accounts

This information is extremely important for researchers who are studying
the impact of social media on political discourse, especially because it is not
currently available through either Twitter's v1.1 or v2 API endpoints.

The code in this small PR may seem a bit brittle but I've been using it
to collect data with each of the twitter subcommands and it seems to
work reliably. While there are image and page URLs associated with each
label I chose to only collect the text description of the lable since it
should be sufficient for finding the additional information later if
needed.

snscrape/modules/twitter.py

@@ -136,6 +136,7 @@ class User(snscrape.base.Entity):
 	linkTcourl: typing.Optional[str] = None
 	profileImageUrl: typing.Optional[str] = None
 	profileBannerUrl: typing.Optional[str] = None
+	label: typing.Optional[str] = None
 
 	@property
 	def url(self):
@@ -457,6 +458,9 @@ class TwitterAPIScraper(snscrape.base.Scraper):
 		kwargs['linkTcourl'] = user.get('url')
 		kwargs['profileImageUrl'] = user['profile_image_url_https']
 		kwargs['profileBannerUrl'] = user.get('profile_banner_url')
+		if 'label' in user['ext']['highlightedLabel']['r']['ok']:
+			kwargs['label'] = user['ext']['highlightedLabel']['r']['ok']['label']['description']
+		
 		return User(**kwargs)