Logging at realtime from the async subprocess while pulling

[Abellegese]

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Description

This PR enhances the async_pull method by adding real-time logging for Docker subprocess commands. The changes improve debugging and provide better insight into the progress of docker pull operations.

[miquelduranfrigola]

Copilot generated summary below

This pull request includes changes to improve the logging and error handling in the async_pull method in ersilia/hub/pull/pull.py. The most important changes include removing the temporary log file, adding asynchronous log streaming, and simplifying the error handling process.

Improvements to logging and error handling:

• Removed the creation and usage of a temporary log file for storing Docker pull logs. (ersilia/hub/pull/pull.py)
• Added an async function log_stream to stream logs asynchronously from the Docker pull process to the logger. (ersilia/hub/pull/pull.py)
• Simplified the error handling by directly logging the return code of the Docker pull process and raising an exception if it fails. (ersilia/hub/pull/pull.py)
• Improved the logging of successful pull completion messages for both conventional and forced pulls. (ersilia/hub/pull/pull.py)