Add support for vector types

#### Read me

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- you shall create a feature request only when it is general purpose enough.
- make sure that the feature is not already

#### Describe the feature

With vector search becoming available in most RDBMS, can we get native support for the vector embedding types in mysql, postgres, oracle, maria, etc?

#### Use cases

Right now, we have to pull down the embedding as a string type which adds unnecessary overhead and mem copies for the conversions back and forth.

Also, writing the embedding is extremely problematic since there doesn't appear a way to package it in a way that will work across all DBs. I.e. you have to use a dialect specific `ColumnTransformer` to wrap the string in `STRING_TO_VECTOR`, `VEC_FromText`, or `''::vector` for postgres.

#### Contribution

Who should implement this feature ? are you volunteering for implementing this feature or
do you know that is able and willing implement this feature ?