Add Period converter support

[philwebb]

As suggested by @odrotbohm, It would be nice to have a Period converter similar to the Duration one we provide.

[snicoll]

When we look at this, make sure to update the annotation processor to handle Period if necessary.

[eddumelendez]

Hi everyone, can I take this one? May a friend of mine would be interested too so we can pair. WDYT?

[mbhave]

@eddumelendez Sure, thank you.

[Grubhart]

Hi everybody!!! I will work on this with @eddumelendez

[philwebb]

Closing in favor of PR #21136