fix: Moved device parameter from DRLAgent initialization to get_model…

… method (#1279)

* fix: Moved device parameter from DRLAgent initialization to get_model method

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* fix: Moved device parameter from DRLAgent initialization to get_model method

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* fix: add progress bar when downloading data from yfinance

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* Add ensemble reinforcement learning example with performance metrics analysis

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