feat: add lancia workflow, launcher scripts, and docs updates

[Aron-Magg]

Title: feat: add lancia command, fix compiler/runtime issues, and improve examples/docs

Summary

This PR introduces a new FratmScript CLI command, improves compiler behavior, fixes runtime pain points, and refreshes project docs and examples.

What Changed

1) New CLI command: lancia

• Added lancia as the primary command to compile and execute .fratm files.
• Kept backward compatibility with run as an alias.
• Updated CLI help text and user-facing documentation.
• Updated task runner recipes (justfile) to use lancia naming.

2) Compiler and language fixes

• Improved OOP support in fratm-core:
  • class inheritance (figlio 'e)
  • super calls ('o pate)
  • static methods (fisso)
  • class methods without requiring facc
• Extended lexer/parser/codegen accordingly.
• Added/updated compiler tests for OOP and string edge cases.
• Fixed parsing for multiline arrays in examples.
• Fixed error formatting behavior in errors.rs (Neapolitanized messages now match tests).

3) Runtime and tooling improvements

• Updated CLI execution path to correctly support interactive scripts (stdin passthrough).
• Added OS-aware justfile improvements and clearer recipe docs/menu output.
• Added/updated .gitignore rules to avoid tracking generated .js artifacts.

4) New content and docs

• Added game:
  • Games/Pomodor_e_Muzzarel/pomodor_e_muzzarel.fratm
• Added personal launcher:
  • PersonalScripts/run_personal_scripts.fratm
• Added new examples:
  • examples/11_oop_avanzato.fratm
  • examples/12_trycatch_validazione.fratm
• Updated module example to remove external React dependency:
  • examples/09_moduli.fratm
• Added run guide:
  • RUN_EXAMPLES.md (English)
• Updated README.md with new paths, links, commands, and workflow.

Verification

• cargo test -p fratm-core passes.
• Examples build and run with the updated CLI command (lancia).
• Release binary command flow validated.

Notes

• This PR keeps run as a compatibility alias to avoid breaking existing scripts immediately.
• New docs prefer lancia everywhere.