CIDR Support in vertx-pg-client

[AyanKoche]

Motivation: CIDR Data type support in vertx-pg-client

Explain here the context, and why you're making that change, what is the problem you're trying to solve.
There are several data types supported by vertx-pg-client but CIDR was missing implementation. As the project I am working on requires that support, contributing it is the better way.
Changes:

• Have added a CIDR class
• Have added 3 methods : binaryEncodeCidr, binaryDecodeCidr, textDecodeCidr
• Have added tests for CIDR class
• Have made relevant changes to the docs as well

Conformance:

You should have signed the Eclipse Contributor Agreement as explained in https://github.com/eclipse/vert.x/blob/master/CONTRIBUTING.md
Please also make sure you adhere to the code style guidelines: https://github.com/vert-x3/wiki/wiki/Vert.x-code-style-guidelines

[vietj]

Actually InetAddress.getByAddress

[AyanKoche]

Addressed.

[vietj]

a few concerns to address

[AyanKoche]

Addressed the previous comments. Please re-review it. @vietj

[vietj]

can you squash your commits in a single one ?

[AyanKoche]

Sure ,doing it

[AyanKoche]

@vietj Hi sorry for delayed response, I have made the changes and squashed the commits into single commit. Kindly have a look at it

[AyanKoche]

Hi @vietj , any review comments on the PR?

[vietj]

I cannot see any tests with a real database and the CIDR type, we need to have at least a test that read / write CIDR objects to a test container postgresql instance. Look at how other specific types are tested.

[AyanKoche]

@vietj I have added test cases dependent on a real database. I have tested them with pg embedded version 12 as previous versions didn't have CIDR support. Please review and provide input.

[vietj]

great feature thanks @AyanKoche