Код возврата в picodata connect/admin

Summary

When picodata connect and picodata admin CLIs read input from the file (script.sql) and the file contains commands with errors, then non-zero exit code will be returned. If the input is read from console, everything remains as it was, error is printed, REPL waits for another command and the exit code will be zero unless some crash will happen.

• Close #997 (closed) #1064 (closed)
• Cherry-pick to: none
• Docs follow-up: not necessary
• Changelog is updated

Closes #997 (closed) #1064 (closed)