refactor: added config file and moved constants

- Moved hardcoded configuration constants to a dedicated config.py file.
- Created VideoConfig, AudioConfig, MainConfig, and Settings classes in config.py

ref: N25B-236

src/robot_interface/core/config.py

@@ -0,0 +1,46 @@
+
+from __future__ import unicode_literals
+
+import os
+
+class AgentSettings(object):
+    """Agent port configuration."""
+    def __init__(self, actuating_receiver_port=5557, main_receiver_port=5555,video_sender_port=5556, audio_sender_port=5558):
+        self.actuating_receiver_port = actuating_receiver_port
+        self.main_receiver_port = main_receiver_port
+        self.video_sender_port = video_sender_port
+        self.audio_sender_port = audio_sender_port
+
+class VideoConfig(object):
+    """Video configuration constants."""
+    def __init__(self, camera_index=0, resolution=2, color_space=11, fps=15, stream_name="Pepper Video", image_buffer=6):
+        self.camera_index = camera_index
+        self.resolution = resolution
+        self.color_space = color_space
+        self.fps = fps
+        self.stream_name = stream_name  
+        self.image_buffer  = image_buffer
+
+class AudioConfig(object):
+    """Audio configuration constants."""
+    def __init__(self, sample_rate=16000, chunk_size=512, channels=1):
+        self.sample_rate = sample_rate
+        self.chunk_size = chunk_size
+        self.channels = channels
+
+class MainConfig(object):
+    """Main configuration"""
+    def __init__(self, poll_timeout_ms=100, max_handler_time_ms=50):
+        self.poll_timeout_ms = poll_timeout_ms
+        self.max_handler_time_ms = max_handler_time_ms
+
+class Settings(object):
+    """Global settings container."""
+    def __init__(self, agent_settings=None, video_config=None, audio_config=None, main_config=None):
+        self.agent_settings = agent_settings or AgentSettings()
+        self.video_config = video_config or VideoConfig()
+        self.audio_config = audio_config or AudioConfig()
+        self.main_config = main_config or MainConfig()
+
+
+settings = Settings()