feat: add new StreetNumericClassification

[JanF01]

👋 I thought about how to solve #175 . I came up with adding a new StreetNumericClassification. I'm aware that it is a very country specific case.

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Here's the reason for this change 🚀

As stated in #175, Poland has a lot of Street Names that start with numbers, we have found over a 1500 such streets in the database and just creating schemes for them is not a possibility as the 2nd, 3rd and so on words should be classified accordingly. I would be open for any different ideas to solving this issue.

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Here's what actually got changed

• Added StreetNumericClassification and StreetNumericClassifier
• Added numeric_streets.txt to the pelias dictionary with keywords that in most cases begin a Numeric Street
• Added schemes for Numeric Streets with 1,2,3 or 4 word length

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Here's how others can test the changes 👀

I have added unit tests for the StreetNumericClassifier

Closes #175

[JanF01]

@missinglink @Joxit I would appreciate your insights on whether the proposed solution is suitable for inclusion or if it requires revisions. Thank you for your time