claude_refactor_v3: De-duplicate gin-configs, + "in/config_files" with common and cpecific experiment-presets gins

in/config_files/tracking.gin

@@ -1 +1,16 @@
+# Default tracking: TensorBoard on, W&B off, no Grad-CAM, no profiler.
+TrackingConfig.use_wandb = False
+TrackingConfig.use_tb = True
+TrackingConfig.wandb_project = 'caption-test-gtauav'
+TrackingConfig.wandb_run_name = None
+TrackingConfig.wandb_entity = None
+
+TrackingConfig.log_grad_norms = True
+TrackingConfig.use_gradcam = False
+TrackingConfig.gradcam_every = 5
+TrackingConfig.gradcam_samples = 8
+
+TrackingConfig.use_profiler = False
+TrackingConfig.profiler_warmup = 3
+TrackingConfig.profiler_active = 5