Create the JDBC Driver - H2 Example codestart in Java & Kotlin

[ia3andy]

Description
Create the Hibernate ORM Example codestart in Java & Kotlin

based on:
https://github.com/quarkusio/quarkus-quickstarts/tree/master/hibernate-orm-quickstart

as part of epic: #8134

Contributing an example Codestart

• doc: https://github.com/quarkusio/quarkus/blob/master/independent-projects/tools/codestarts/README.adoc
• codestarts dir: https://github.com/quarkusio/quarkus/tree/master/devtools/platform-descriptor-json/src/main/resources/codestarts/quarkus/examples

Codestart Core

• code: https://github.com/quarkusio/quarkus/tree/master/independent-projects/tools/codestarts
• core codestarts dir: https://github.com/quarkusio/quarkus/tree/master/devtools/platform-descriptor-json/src/main/resources/codestarts/quarkus/core

[quarkusbot]

/cc @evanchooly
/cc @quarkusio/devtools

[ia3andy]

CC @jantosi

[jantosi]

I'll gladly take this one :)

[ia3andy]

Following recent guilines, extension codestarts should contain the code that is most of the time used when starting with an extension (no business). It should not follow a quickstart.