Russian grammar update with missing 'chord' status street name

[yuryleb]

Issue

Moscow has currently single 'chord' status street name that is not currently handled by Russian grammar. This PR adds this missing functionality.

Tasklist

• [x] Update grammar
• [x] Add changelog entry
• [x] Test with osrm-frontend
• [ ] Review

[yuryleb]

osrm-frontend also works with updated grammar: