DM-53068: Accept seqNum range in URL and add date related UI functionality

[ugyballoons]

Individual seqNums and seqNum ranges can be specified via URL e.g.:
rubintv/test/lsstcam/date/2025-10-20?seq_num=60,85 or rubintv/test/lsstcam/date/2025-10-20?seq_num=72
The calendar now only shows when the date is clicked on.
The next/previous historical days can be jumped to using the buttons either side of the date.

[Copilot]

Pull Request Overview

This PR refactors the camera table page to improve code organization and add new features including date navigation, sequence number highlighting, and calendar updates. The changes consolidate multiple React components into a single unified CameraTable component and extract reusable functionality.

• Consolidates page rendering logic into a new CameraTable component
• Adds date navigation buttons with prev/next functionality
• Implements sequence number highlighting and auto-scroll
• Extracts useModal hook and Button component for reuse
• Refactors websocket notification system for better maintainability

Reviewed Changes

Copilot reviewed 43 out of 44 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/js/components/CameraTable.tsx	New unified component that orchestrates calendar, channels, and table rendering
src/js/components/TableView.tsx	Adds sequence number highlighting and auto-scroll functionality
src/js/components/TableControls.tsx	Implements date navigation buttons and calendar toggle
src/js/hooks/useModal.tsx	Extracts modal hook for reusability across components
src/js/components/Button.tsx	Extracts button component from PerDay
src/js/modules/utils.ts	Adds utility functions for date navigation and sequence ranges
src/sass/style.sass	Updates styles for date navigation UI and row highlighting
python/lsst/ts/rubintv/handlers/pages.py	Adds seq_num parameter support and calendar data retrieval
python/lsst/ts/rubintv/background/historicaldata.py	Adds calendar update notifications
eslint.config.mjs	Simplifies ESLint configuration

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