Add Vertica DB support on dataframe-jdbc

[brunoteo]

Hi! I've created this pull request to handle Vertica Database inside dataframe-jdbc

A new Vertica.kt class was added that implements DbType

I tested the solution in verticaTest.kt class running this local docker image -> https://hub.docker.com/r/vertica/vertica-ce

The documentation is updated with the Vertica dependency

Thanks

[zaleslaw]

Hi @brunoteo thanks for the contribution! We need approximately 2–4 weeks to test your solution and make a decision about including this feature in 0.14 release or not. After that, I will be able to return to you with some questions.

It's an excellent-prepared PR!