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.