feat(timepicker): added support for seconds

[papoola]

timpicker can now show seconds as well which is by default hidden. passing timepickerConfig.showSeconds=true or <timepicker show-seconds="true" ...> will enable this feature. Additional tests and documentation is still missing, and thats why I call to volunteers to help with adding tests and documentation particularly in #2326 #1763 #1231

[nyothecat]

Sorry to ask after your commit but did you add milliseconds as well? I am building an app sports lap times and would really need this.
Also, thanks for the seconds!

[CoolCriSyS]

What happened to this change? I don't see the showSeconds attr in the latest src?

[papoola]

@CoolCriSyS unfortunately no volunteers showed up to write test spec and I was my self too busy. Good news is that some one else has created a similar ( but more complete ) PR here #3022 so we just need to wait until it is accepted and merged into master

@nyothecat I am sorry, unfortunately milliseconds is not added and it shouldnt be that hard to add it if you really need it, but you need to find someone or do it your self

[Foxandxss]

Seems like we have modern implementations to this, sorry for the delay.

Closing this.