feat: tk-1 heapsort (Goncharenko)

chore: Rust practice 2 complete

chore: Rust practice 1 complete

fix: Move authors to the bottom in main README.md

feat: final pdf and presentation

chore: minor style fixes in documents

feat(4): chapter 4 is completed

feat(3): chapter 3 is completed

feat(2): chapter 2 is completed

Merge remote-tracking branch 'origin/main'

feat(1): chapter 1 is completed

fix(13): delete almost all STL (except iostream, stddef.h, stdexcept)

feat(13): task b completed

feat(13): task a completed

chore: Add all current code

create: README.md

chore: Chapter 4 completed