Leds and buttons events (#266)

Use events and commands to control custom onboard leds and buttons. Can be used to communicate with an external Python script via a WebSocket API running in a container alongside LVA.

examples/Jabra Speak 410/Dockerfile

@@ -0,0 +1,13 @@
+FROM ghcr.io/astral-sh/uv:python3.14-bookworm
+
+ENV UV_COMPILE_BYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+RUN apt-get update && apt-get install -y wireplumber libhidapi-dev python3-hidapi python3-hid wireplumber
+
+COPY . /app
+WORKDIR /app
+
+RUN uv sync --locked
+
+CMD uv run main.py