Add .env example

.env.example

@@ -0,0 +1,28 @@
+OPENAI_API_KEY=
+MODEL_NAME="gpt-4o-realtime-preview-2025-06-03"
+
+# Please, change to "false" when you test on a real robot
+# Bool params are case sensitive currently
+SIM=true
+LOG_LEVEL=INFO
+
+# Keep it as is, but it's to replace inside main later
+SAMPLE_RATE=24000
+
+# To be changed, keep as is 
+AUDIO_IN=ReSpeaker Lite
+AUDIO_OUT=ReSpeaker Lite
+
+# Should correctly detect the plugged-in Reachy
+# To be changed as well
+CAMERA_INDEX=0
+
+# "true" to enable vision
+VISION_ENABLED=true
+
+# If "SIM=true" head tracking is disabled
+# Change to "true" when SIM is "false"
+HEAD_TRACKING=false
+
+# Cache for local VLM
+HF_HOME=./cache