cli.md: picodata run --shredding

• tutorial/run.md: renew secure_run
• instance_runtime_files.md: review all
• cli.md: revise picodata run --shredding
• cli.md: links to tutorial

---

• Target branch: main
• Changes should be cherry-picked to 24.2: yes / no
• Staging:
  • https://docs.binary.picodata.io/picodata/rosik_cli_shredding/tutorial/run/#secure_run
  • https://docs.binary.picodata.io/picodata/rosik_cli_shredding/reference/cli/#run_shredding
  • https://docs.binary.picodata.io/picodata/rosik_cli_shredding/architecture/instance_runtime_files