feat: add interactive mode flag to cli

Summary

Disable interactive mode by default. To enter interactive mode use -i or --interactive cli flag. The changes apply only to picodata run.

Close #326 (closed)

Ensure that

• New code is covered by tests
• API is documented
• Changelog is up to date
• (if Lua API changed) Lua API version is bumped in luamod.rs
• A follow-up doc issue is created: docs#80 (closed)