Adjust a few things post 1.0.0 release

[ionut-arm]

• the quickstart guide was changed to point to the new quickstart package
• the service API coverage was updated
• add the Java library to list of client libs

Fixes #138 Fixes #139

cc @GowthamSureshKumar @MohamedAsaker

[ionut-arm]

@hug-dev - I'll remove you as a codeowner, probably in a separate PR 😁 you ok with that, or shall I let it be as is?

[hug-dev]

@hug-dev - I'll remove you as a codeowner, probably in a separate PR grin you ok with that, or shall I let it be as is?

Yes that's fine :ok_hand: !