Add verbose flag to DeepRacerLog init and load methods

[Copilot]

DeepRacerLog provided no feedback during initialization or log loading, making it hard to confirm what was detected and loaded without inspecting the dataframe manually.

Changes

• __init__(verbose=False) — stores verbose as self.verbose; prints the folder type selected by determine_root_folder_type() when True
• load_training_trace() — prints step/episode/iteration counts after load using self.verbose; uses unique_episode for correct multi-worker counting
• load_evaluation_trace() — prints step/episode/iteration counts after load using self.verbose
• load_robomaker_logs() — prints step/episode/iteration counts after load using self.verbose
• load() — delegates to the underlying load method which reads self.verbose
• _print_load_summary() — private helper extracted to avoid duplication across load methods

The verbose flag is set once on the constructor and applies to all subsequent load operations. All existing call sites are unaffected as it defaults to False.

Example

drl = DeepRacerLog("./my-model", verbose=True)
# Folder type detected: DROA_SOLUTION_LOGS

drl.load_training_trace(ignore_metadata=True)
# Loaded training trace: 846 steps, 40 episodes, 2 iterations

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add a verbose flag to key functions in log.py / DeepRacerLog</issue_title>
<issue_description>Needed feature:

• During initialization the self.fh.determine_root_folder_type() should output what it selected.
• During the load_*_trace() and load_robomaker_logs() a brief summary should be added (X steps, Y episodes, Z iterations).</issue_description>

<agent_instructions>Verbose flag should default to False. Ensure documentation and test cases are updated.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Add a verbose flag to key functions in log.py / DeepRacerLog #72

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[larsll]

@copilot let's simplify it -- just pass verbose on the constructor (init), then store the result for all other function calls. You can then revert changes in many of the function calls.

[Copilot]

@copilot let's simplify it -- just pass verbose on the constructor (init), then store the result for all other function calls. You can then revert changes in many of the function...

Done in commit 1cb4965. verbose is now only accepted by __init__ and stored as self.verbose. All load methods (load(), load_training_trace(), load_evaluation_trace(), load_robomaker_logs()) have had their verbose parameter removed and use self.verbose internally instead.