feat: 814 probe creation and removal

[kjy5]

And basic movement with keyboard and dragging (no axis lines)

[Copilot]

Pull Request Overview

This PR implements probe creation and removal functionality with basic movement controls via keyboard and dragging. The changes introduce a new UI system for managing probes through dropdown menus and list views, while consolidating probe type definitions and updating the Redux state management to handle probe operations.

• Adds probe creation UI with dropdown menus for different probe types (Neuropixels, Pipettes, UCLA)
• Implements probe removal functionality with delete buttons in the probe list
• Consolidates ProbeType enum from ProbeProperties to a shared utilities location and updates all references

Reviewed Changes

Copilot reviewed 23 out of 23 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
ProjectSettings/ProjectSettings.asset	Enables APP_UI directive for new UI system
Assets/UI/Views/Scene.uxml	Adds probe creation menu and updates probe list view
Assets/UI/Styles/ProbeColors.uss	Defines CSS color variables and classes for probe icons
Assets/UI/Components/ProbeListItem.uxml	Updates probe list item component with new UI elements
Assets/Scripts/UI/Views/SceneView.cs	Implements probe creation/selection event handlers
Assets/Scripts/UI/Views/ProbeListItemView.cs	Handles probe list item interactions and color management
Assets/Scripts/UI/Views/MainView.cs	Updates UI visibility logic for APP_UI directive
Assets/Scripts/UI/ViewModels/SceneViewModel.cs	Adds probe management commands and state subscriptions
Assets/Scripts/UI/ViewModels/ProbeListItemViewModel.cs	View model for individual probe list items
Assets/Scripts/Services/StoreService.cs	Updates Redux action registration
Assets/Scripts/Pinpoint/	Multiple files updating ProbeType references
Assets/Scripts/Models/Scene/	Updates Redux reducers and actions for probe management

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