Office dynamic participants layout

[utkaka]

An experimental version of the new meeting layout. The PR is primarily intended to gather feedback, and if the reaction is positive, it will be further refined.

[huly-github-staging]

Connected to Huly®: UBERF-13832

[Copilot]

Pull Request Overview

This PR introduces a new dynamic participants layout for Office meetings with automatic grid positioning based on container size and participant count. The layout replaces the previous fixed grid system with an adaptive algorithm that optimizes tile sizes and column counts.

• New dynamic grid layout algorithm that calculates optimal tile sizes and column arrangements
• Removed conditional video tab creation and simplified meeting widget setup
• Enhanced responsive design with proper aspect ratio handling and ResizeObserver integration

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
plugins/love-resources/src/utils.ts	Simplified createMeetingWidget to always include video tab
plugins/love-resources/src/types.ts	Removed unused DefSeparators import and loveSeparators constant
plugins/love-resources/src/components/meeting/widget/VideoTab.svelte	Added height: 100% to container styling
plugins/love-resources/src/components/meeting/ParticipantsListView.svelte	Major refactor with dynamic grid layout algorithm and ResizeObserver
plugins/love-resources/src/components/meeting/ControlExt.svelte	Updated createMeetingWidget call to remove video parameter
plugins/love-resources/src/components/meeting/ControlBarContainer.svelte	Fixed hardcoded gap value in responsive styles
plugins/love-resources/src/components/VideoPopup.svelte	Replaced Scroller with direct div and simplified layout structure
plugins/love-resources/src/components/Room.svelte	Complete layout restructure with new separator system and responsive design

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