Add seconds support for time-picker component

[Tian-Hun]

Closes #

Additional information (check all that apply):

• Bug fix
• New functionality
• Documentation
• Demos
• CI/CD

Checklist:

• All relevant tags have been applied to this PR
• This PR includes unit tests covering all the new code
• This PR includes API docs for newly added methods/properties
• This PR includes feature/README.MD updates for the feature docs
• This PR includes general feature table updates in the root README.MD
• This PR includes CHANGELOG.MD updates for newly added functionality
• This PR contains breaking changes
• This PR includes ng update migrations for the breaking changes
• This PR includes behavioral changes and the feature specification has been updated with them

[kdinev]

@Lipata Please assign somebody to test this PR.

[jackofdiamond5]

@Tian-Hun There seems to be a problem with the parsing of the input value's seconds - when you edit the seconds and expand the time picker, the changes are not reflected. Another thing that happens is when you expand the time picker and try to select a different value for the seconds, it updates the minutes' value instead.

[Tian-Hun]

Ok, I understand and fix it.

[damyanpetev]

@Tian-Hun Thanks!
While at it, do you mind renaming all the "second-" names to "seconds-" just so it won't be confused with secondary/another (e.g. secondList -> secondsList, selectedSecond*s*, etc)?

Ask away if you need help.

[Tian-Hun]

@damyanpetev Thank you for your reminder, I will modify it.

[wnvko]

This component should be strongly refactored

[DSergii]

Hello everyone!
@wnvko Wich igniteui-angular version support seconds? I need it for angular 8.2+
I've tried with "igniteui-angular": "8.2.31", but it doesn't support seconds.
Higher versions of "igniteui-angular", like 9+, doesn't work with angular 8.2+

[Lipata]

Hi, @DSergii.

When we develop features, we develop them for the upcoming versions - which in the case with the seconds list means that it was developed for version 9.0.0 and above. You can see that it was initially released with 9.0.0-beta.7.

[Lipata]

@DSergii, you can follow our Update Guide and ask if you have some problems. We have migrations, the same way as Angular has, and if something needs to be done manually, it is described in the document above.

[DSergii]

Thank you @Lipata, but unfortunately, I can't update angular version and seems 9.0.0-beta.7 will not work with angular 8.2+