Add stepik stage3

Add stepik stage1 and stage2 materials

Remove large file for GitVerse

Add files

Configure Git LFS for large files

Merge branch 'master' of github.com:kseniaH-0/study_2025-2026_os-intro

Add Stepik course stage1

Add zip

Add lab13

Add files lab12

add files lab11

add lab10

Add lab9 archive

Add lab9 report and presentation

Merge branch 'master' of github.com:kseniaH-0/study_2025-2026_os-intro

add lab8

zip

Add archive

Add lab7 report and presentation

Add lab6 report and presentation