feat: add vertical orientation support to SlideToUnlock

[XDdevv]

🚀 Add Vertical Orientation to SlideToUnlock

🎯 Goal

Enhance SlideToUnlock by adding vertical orientation support, making it more flexible for different UI layouts.
Currently, the component only supports horizontal sliding. With this update, developers can also enable vertical sliding, which is especially useful for:

• Compact UIs
• Bottom sheets
• Narrow or tall layouts

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🛠 Implementation Details

• ✨ Added a new parameter:

  orientation: SlideOrientation = SlideOrientation.Horizontal

• 🔄 Implemented proper gesture detection for vertical sliding.
• 📐 Updated layout measurement & track rendering to support both orientations.
• 🖌 Ensured thumb and hint composables remain aligned and styled correctly in vertical mode.
• 🔒 Maintains backward compatibility with existing horizontal behavior.

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✍️ Examples

Horizontal (default):

SlideToUnlock(
    isSlided = isSlided,
    onSlideCompleted = { isSlided = true },
    hintTexts = HintTexts(
        defaultText = "Slide to subscribe",
        slidedText = "Subscribing..."
    )
)

Vertical (new):

SlideToUnlock(
    isSlided = isSlided,
    orientation = SlideOrientation.Vertical,
    modifier = Modifier.height(300.dp),
    onSlideCompleted = { isSlided = true },
    hintTexts = HintTexts(
        defaultText = "Swipe down to confirm",
        slidedText = "Confirming..."
    )
)

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✅ Prepare for Review

• Ran ./gradlew spotlessApply → ✅ Clean formatting
• Ran ./gradlew apiDump → ✅ Verified no unintended API changes
• Tested both orientations in the sample app

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[skydoves]

This is awesome! Thank you so much for your contribution 💙

[XDdevv]

Thanks for the quick review and merge! Really happy to contribute to this project 🙌