Support Codex CLI bash permission

[saitota]

Codex CLI supports command approval rules via prefix_rule() in .codex/rules/*.rules, but Rulesync currently exports codexcli permissions only to .codex/config.toml
permissions.bash are skipped instead of being translated into Codex command rules.

• doc https://developers.openai.com/codex/rules
• rel Add Codex CLI permissions support (generate/import) #1467