#185 Workspace instruction modal for autogen and new workspace

[!IMPORTANT]
Introduces WorkspaceInstructionModal to guide users through workspace features with specific modes and integrates it into the workspace creation and onboarding process.

• Behavior:
  • Adds WorkspaceInstructionModal to guide users through workspace features in page.tsx and DashboardLayout.tsx.
  • Supports 'first-open' and 'autogen' modes with specific behaviors in WorkspaceInstructionModal.tsx.
  • Tracks user interactions and modal state using local storage in use-workspace-instruction-modal.ts.
• Integration:
  • Integrates modal into workspace creation flow in CreateWorkspaceModal.tsx and HomeContent.tsx.
  • Uses markNewWorkspaceInstruction to trigger modal display for new workspaces.
• UI Enhancements:
  • Adds animations and styles for modal transitions in globals.css.
  • Implements carousel functionality for modal steps in WorkspaceInstructionModal.tsx.

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Summary by CodeRabbit

Release Notes

• New Features

  • Added an interactive onboarding modal with video-backed carousel guides for new workspaces.
  • Introduced assistant thread running state tracking and propagation across application components.
  • Added user interaction tracking and fallback handling for generated content flows.

• Style

  • Enhanced CSS shimmer animation.