Fix: Readability, speed, errors

[TheHunterDog]

This pull request includes significant changes to the youtube-unsubscriber.js script, improving its readability and functionality. The main changes involve refactoring the code to use more descriptive variable names, simplifying the logic, and ensuring better performance.

Key changes:

• Improved variable names and intervals:

  • Changed the variable i to unsubedItems to better reflect its purpose.
  • Introduced confirmButtonIntervalTime and intevalTime for better control over the intervals.

• Simplified the main function logic:

  • Replaced the nested myTimer function with a single unsubscribe_load function to streamline the process.
  • Removed redundant setInterval and setTimeout calls, consolidating them into a more straightforward structure.

• Enhanced readability:

  • Used const and let instead of var for variable declarations to follow modern JavaScript practices.
  • Added comments and improved console log messages for better debugging and understanding of the script's progress.