elm_calendar: add APIs for minimum and maximum values for the date

elm_calendar: add APIs for minimum and maximum values for the date

elm_calendar already have minimum and maximum year set/get APIs.
I've added new APIs that exapanded from the year to the date.
These APIs help us not only set min/max month but also set min/max day.
If you set the minimum date, changing the displayed month or year if needed.
Displayed day also to be disabled if it is smaller than minimum date.

Reviewers: woohyun, Hermet, jpeg, CHAN, cedric

Reviewed By: CHAN, cedric

Subscribers: CHAN, cedric, jpeg

Differential Revision: https://phab.enlightenment.org/D4226

Change-Id: If93e888eb76e1f84b2601a87b12b8b67f2d4820c
Signed-off-by: JEONGHYUN YUN <jh0506.yun@samsung.com>