fix: make sure to create picker before calling update(), fixes #274

[ghiscoding]

fixes #274

• the fix is basically to make sure that the picker element is created before the .update() does its execution, if the picker element is not yet created then it will be created and then the update runs its execution.
• the code changes are mainly the following
  1. move the setPositionCalendar function from handleInput.ts into position.ts so it could be reused by other files
  2. move the createCalendarToInput function from handleInput.ts into a new file named createCalendarToInput.ts so it could be reused by other files
  3. then the script update.ts can now call createCalendarToInput to create the picker if it wasn't yet created

for more info about the bug, visit issue #274, the animated gif below simply shows that the input element is no longer being transformed after calling the .update(). Prior to this fix, calling the update, before opening the picker, would have reassigned and transformed the input element to include new picker element which was wrong, the input should never be changed and remain untouched

[ghiscoding]

Also note that I already have this change in my fork and I have been using it for a few weeks already and it really fixed the issue. That was the last bug that I had with your lib. However, I still cannot drop my fork and use your project just yet until this new Discussion #279 is addressed. I'm so close to be able to drop my fork and use your great project again :)