add a encrypted video stream (and key for decription) for integration tests of video player ios 16 bug

Author: hellohuanlin

assets/videos/hls/encrypted_bee.key

@@ -0,0 +1,2 @@
+���k
+hw't6���

assets/videos/hls/encrypted_bee.m3u8

@@ -0,0 +1,15 @@
+#EXTM3U
+#EXT-X-VERSION:4
+#EXT-X-TARGETDURATION:2
+#EXT-X-MEDIA-SEQUENCE:0
+#EXT-X-KEY:METHOD=AES-128,URI="https://flutter.github.io/assets-for-api-docs/assets/videos/hls/encrypted_bee.key",IV=0x00000000000000000000000000000000
+#EXTINF:2.002000,
+#EXT-X-BYTERANGE:702180@0
+encrypted_bee0.ts
+#EXTINF:2.002000,
+#EXT-X-BYTERANGE:754256@0
+encrypted_bee1.ts
+#EXTINF:0.033367,
+#EXT-X-BYTERANGE:31960@0
+encrypted_bee2.ts
+#EXT-X-ENDLIST