Enhanced session validation, two-factor authentication, and login challenge handling

[loosiegoosey]

• Added handling for TwoFactorRequired, ChallengeRequired, and LoginRequired exceptions during login to manage two-factor authentication and login challenges.
• Introduced the ensure_logged_in method to check session validity using self.client.get_timeline_feed() and re-login if needed.
• Added the is_user_blocked method to check if a user is already blocked.
• Modified the block_users method to ensure session validity before blocking users and to skip
• already blocked users.
• Included a check in the init method to raise an exception if the client is not initialized.
• Added a main entry point to execute the script directly.

[loosiegoosey]

please do not approve "The revised instagram.py file improves the login process by handling" commit. i ran into an issue with maintaining session validation and had to try to fix it

[incandenza-11]

Great job @loosiegoosey, this is awesome. I'll review this asap

[incandenza-11]

please do not approve "The revised instagram.py file improves the login process by handling" commit. i ran into an issue with maintaining session validation and had to try to fix it

FYI @loosiegoosey you can drop that commit if no longer applies by running an interactive rebase: https://jwiegley.github.io/git-from-the-bottom-up/1-Repository/8-interactive-rebasing.html

[incandenza-11]

@loosiegoosey Let me know when the changes related to blocking a user are done and the unwanted commit has been dropped, I'll then edit the list of usernames and merge this PR 👌 Thanks!

[incandenza-11]

@loosiegoosey let me know if you need help to drop the unwanted commit. We need to do this before merging, and I don't think I have the permissions to make changes in your forked repository

[loosiegoosey]

@loosiegoosey let me know if you need help to drop the unwanted commit. We need to do this before merging, and I don't think I have the permissions to make changes in your forked repository

I may need help. I've never done a rebase before. I did add you as a contributor to my fork. i did try dropping my 3 commits, make changes to checking block user, and resubmitted all-inclusive commit.

[incandenza-11]

@loosiegoosey No worries, I'll help out by making the changes directly to your branch. I'll make screenshots of the process so you can see how that's done :) Or maybe we can do this together in a meeting if you prefer!

[loosiegoosey]

@infinite-wait so generous of you. thank you for your time and labor in helping me out. I'm forever grateful. I'm ok with either a meeting or screenshots