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[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

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

Additional details and impacted files

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

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