[bilibili] add support for Live Photo (video) downloads (#8860)

* bilibili: add support for live photo downloads
* fix: resolve flake8 linting errors (whitespace and line length)
* fix: resolve flake8 E302 and W293 linting errors
* fix: resolve flake8 W293 and E302 linting errors

* simplify syntax
* add 'livephoto' option
* add tests

test/results/bilibili.py

@@ -65,6 +65,16 @@ __tests__ = (
 """,
 },
 
+{
+    "#url"    : "https://www.bilibili.com/opus/1154738799821979656",
+    "#comment": "livephoto (#8860)",
+    "#class"  : bilibili.BilibiliArticleExtractor,
+    "#results": (
+        "http://i0.hdslb.com/bfs/new_dyn/live_958a5cffe9177b196ada011867abd0a031968078.jpg",
+        "https://i0.hdslb.com/bfs/dyn_video/_000003lud8wlka5eq2kxctgfx3fwo3b-1-152111110022.mp4",
+    ),
+},
+
 {
     "#url"    : "https://space.bilibili.com/405279279/article",
     "#class"  : bilibili.BilibiliUserArticlesExtractor,
@@ -77,6 +87,11 @@ __tests__ = (
     "#class"  : bilibili.BilibiliUserArticlesExtractor,
 },
 
+{
+    "#url"    : "https://space.bilibili.com/405279279/dynamic",
+    "#class"  : bilibili.BilibiliUserArticlesExtractor,
+},
+
 {
     "#url"    : "https://space.bilibili.com/405279279/favlist?fid=opus",
     "#class"  : bilibili.BilibiliUserArticlesFavoriteExtractor,