feat: defaultVisible prop added

[jpranays]

Added optional defaultVisible prop : If set true, then on initial render, dropdown menu is visible.

[mrholek]

@jpranays, why don't you use a visible prop instead?

[jpranays]

Since the main component already handles state logic for toggling, I believe there’s no necessity to duplicate it in the parent component. Additionally, I found it beneficial to include a defaultVisible option, akin to practices seen in other prominent libraries.
While using one of those libraries, I needed to pass down props but couldn’t locate the defaultVisible prop to match with.

[jpranays]

Any update on this ?