SOLR-17164: Add 2 arg variant of vectorSimilarity() function

[iamsanjay]

https://issues.apache.org/jira/browse/SOLR-17164

Introducing 2 arg variant of vectorSimilarity function query.

vectorSimilarity(vector1, vector2)

This function accepts two vectors as input: The first argument must be a Knn vector, and the second argument can be either a Knn vector or a constant vector. The function automatically deduces the Vector Encoding and Similarity function from the properties of the first Knn vector.

Syntax Examples

• vectorSimilarity(vectorField1, vectorField2): calculates the similarity between vector field 'vectorField1' and 'vectorField2'
• vectorSimilarity(vectorField1, [1, 2, 3, 4]): calculates the similarity between vector field 'vectorField1' and [1, 2, 3, 4]

Checklist

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• [x] I have developed this patch against the main branch.
• [ ] I have run ./gradlew check.
• [x] I have added tests for my changes.
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