Support srt file format

[tbaddade]

Original file format

1
00:00:01,000 --> 00:00:05,000
Welcome

2
00:00:06,000 --> 00:00:10,000
Example with comma

3
00:00:11,000 --> 00:00:15,000
Thanks

Adapted file format (Comma replaced by point.)

1
00:00:01.000 --> 00:00:05.000
Welcome

2
00:00:06.000 --> 00:00:10.000
Example with point

3
00:00:11.000 --> 00:00:15.000
Thanks

The manually adjusted file format works, so it would be nice if Vidstack could also accept the comma in the timestamp.