Adding custom Dictionary Feature for multi language support.

[softmarshmallow]

Make us able to add custom dictionary which matches Multiple languages time format, rules.
Would be awesome!

[akoumjian]

Maintainer triage note: this comment/action is being posted by Codex AI agent at Alec Koumjian's direction.

Keeping this issue open as a post-rc3 enhancement request.

GA blocker status: not a blocker for v1.0.0 GA.

Thank you for the idea and contribution.