Feature Request: Add Seek Forward/Backward Button Slots to Default Video Layout

[LeTanTru]

Problem

The default video layout doesn't include seekBackwardButton and seekForwardButton slots, while the audio layout does. This makes it difficult to add seek buttons to video players.
Audio layout (works):

<DefaultAudioLayout
  slots={{
    seekBackwardButton: <CustomButton />,
    seekForwardButton: <CustomButton />
  }}
/>

Video layout (doesn't work):

<DefaultVideoLayout
  slots={{
    seekBackwardButton: <CustomButton />, // ❌ Slot doesn't exist
    seekForwardButton: <CustomButton /> // ❌ Slot doesn't exist
  }}
/>

Use Case

Most video platforms (YouTube, Netflix, Disney+) have seek buttons as a standard feature. Users need them for:

• Skipping intros/recaps
• Quick navigation
• Touch interfaces where gestures aren't ideal
• Accessibility

Current Workaround

Using beforeSettingsMenu slot works but isn't intuitive:

slots={{
  beforeSettingsMenu: () => (
    <>
      <SeekBackwardButton />
      <SeekForwardButton />
    </>
  ),
}}

Proposed Solution

Add seekBackwardButton and seekForwardButton slots to DefaultVideoLayout, positioned between the play button and volume control (similar to audio layout).

Benefits

• API consistency between audio and video layouts
• Better UX alignment with industry standards
• Easier customization without custom layouts
  Feel free to adjust based on your preferences!