Add vector normalize processor

[kkondaka]

Is your feature request related to a problem? Please describe.
Add vector normalize processor that can normalize a vector in the event.
Normalizing a vector is described here https://www.wikihow.com/Normalize-a-Vector

Describe the solution you'd like
A new processor that can normalize the vector as described in https://www.wikihow.com/Normalize-a-Vector.
Proposed configuration

processor:
   vector_normalization:
       keys: ["key1", "key2"]

The above config will do vector normalization of vector value for each of the keys.

Describe alternatives you've considered (Optional)
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.