[DOC] Add doc for batch vehicle routing

[hlinsen]

Add doc for PR #728

[github-actions]

🔔 Hi @anandhkb @Iroy30, this issue has had no activity for 21 days. Please update or let us know if it can be closed. Thank you!

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[anandhkb]

Will be closed by @rgsl888prabhu 's DOCs PR

[anandhkb]

Closing as done