adding few basic scripts

[anushas-dev]

Added 4 new basic scripts with example for:

1. in place swap
2. f-string formating
3. vowel, consonant identification
4. print/join list items

[AlvinManojAlex]

Looks fine although I just have a few suggestions.

1. You are using formatted strings in 002_in_place_swap before you introduced formatted strings in the 3rd program file.
2. 005_join_list_items can be changed to a basic list program instead of just specifically doing join_list.

Also @codeperfectplus , the tutorial indices in the README is now not in order (according to the PR), not exactly sure why.

[codeperfectplus]

Thanks for the updates, @anushas-dev — and thanks, @AlvinManojAlex, for the thorough review.
The changes now look aligned with the tutorial flow, and the README ordering is consistent again.
Everything checks out on my end. I’m going ahead and merging this PR.

Nice work, team 🚀