record: Change file naming style

The recording file name should include seconds to differentiate from other file names. It will overwrite the previous recording if the next recording is within a minute. Which means we can't record more than once in a minute. So adding seconds in the file name will solve this issue. Secondly, The sorting will be proper in the folder if, the file name starts with year month then date and ends with time. This MR will change the file naming format from Recording from 14:40 on Tuesday 2020-02-25 to Recording from 2020-02-25 Tuesday at 14:40:30