[feature request] Add ResourceVersion field to Route

[AiRanthem]

It's possible that synced latest route may be overwritten by a slow sandbox update event. Use ResourceVersion may solve this problem.

[kirat10x]

@AiRanthem could I try this, thanks!

[AiRanthem]

@kirat10x Welcome

[kirat10x]

@AiRanthem please review the proposal
#140