feat(guideline): add guideline and hint text to signature pad
This commit introduces a guideline and a hint text feature to the signature pad.

New Parameters in Sain
Composable
showGuideline
: Toggles the visibility of the guideline.guidelineColor
: Sets the color of the guideline.guidelineStrokeWidth
: Defines the stroke width of the guideline.guidelineDashIntervals
: Configures the dash intervals for the guideline.guidelinePadding
: Specifies the padding of the guideline from the pad's edges.guidelineCornerRadius
: Sets the corner radius for the guideline.hintText
: The text to display when the signature pad is empty.hintTextStyle
: The style for the hint text.
Other Updates
- Kotlin version updated from 2.2.10 to 2.2.20.