Changes for graph overview support

[shay23b]

We need to add a few things:

• Create applicationId as a global var (uuid) - happens in Go SDK in function init() which is not exported to the user, it happens every time you run the app
• Add app_id to producer & consumer creation req
• producer & consumer creation req version - 3

These changes are not exported to the client, only for internal usage

For reference the Go SDK:
superstreamlabs/memphis.go#115

[Durdush]

Hi @shay23b, Could you please assign this issue?

[yanivbh1]

Hey @Durdush,
Currently, @rnowling-memphis is leading the Java SDK. @rnowling-memphis is it possible to offload some of the work from your to @Durdush, or with the current status of the Java SDK it would be too hard to collaborate?