Add comprehensive documentation for PyLoadAPI usage

[tr4nt0r]

• Introduced a new documentation page outlining the usage of the PyLoadAPI class.
• Included instructions for importing necessary modules.
• Provided detailed examples for logging configuration, creating an instance of PyLoadAPI, and performing various operations such as login, getting status, pausing/unpausing downloads, toggling pause, stopping all downloads, restarting failed downloads, toggling reconnect, deleting finished files, restarting PyLoad core, getting version, and checking free space.
• Documented exception handling for CannotConnect, InvalidAuth, and ParserError.
• Included example code for setting logging to debug mode and using asyncio.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.83%. Comparing base (243acc2) to head (c4a557b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #31   +/-   ##
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  Coverage   96.83%   96.83%           
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  Files           4        4           
  Lines         158      158           
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  Hits          153      153           
  Misses          5        5           

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