Add WebSocket datasource option for local ESP32 wireless workflows

[musfaagv]

Motivation

• Provide a wireless option for ESP32 workflows by allowing the app to connect to a laptop-hosted local WebSocket server on the same Wi‑Fi network, so incoming lines can be plotted and the Console can send commands back.

Description

• Add WebSocketConfig and extend ConnectionType to include websocket, and expose connectWebSocket(config) from useDataConnection to open a socket and parse newline-delimited lines.
• Implement WebSocket lifecycle handling and bidirectional support in useDataConnection, including graceful disconnects and write() routing to either serial or websocket.
• Add a new "WebSocket" tab to ConnectModal with a WebSocket URL input and a Connect WebSocket action, and wire onConnectWebSocket through Header and App.
• Update ConnectModal unit test and README usage instructions to document the ESP32 + local WebSocket server flow.

Testing

• Ran targeted unit tests: npm test -- src/hooks/__tests__/useDataConnection.test.ts src/components/__tests__/ConnectModal.test.tsx, and both test files passed.
• Built the app with npm run build, which completed successfully.
• Ran the full test suite with npm test, and all tests passed (150 tests in the environment used).

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Codex Task