Add all v2 clients, update dependency version

Add remaining clients (#20)

* add clients, update vpb client to pb client

* add tests

* fix test name

* modify changelog

* leave vpb as is,add new pb client

* upgrade version, fix javadocs

* fix javadoc

* add all clients

* Update CHANGELOG.md

Co-authored-by: Matt Wisniewski <mwisniewski@jwplayer.com>

Co-authored-by: Matt Wisniewski <mwisniewski@jwplayer.com>

V2 client

v1.0.0

V2 client

v0.4.0

Tag v0.4.0

v0.3.1

Tag release 0.3.1

v0.3.0

Release Tag 0.3.0

v0.2.0

Add test for POST request. Refactor status check.

v0.1.0

Tag v0.1.0

v0.0.0

Update changelog