* adding go getting started to 2.0 docs
* updating graphs docs for go; adding in workflow example go snippets
* Updating HiTL docs for Go 2.0
* updating Go getting started guide for v2
* Updating Routes docs for Go v2
* Updating data handling docs for Go 2.0
* Updating dynamic workflows docs for Go 2.0
* fix(docs): set ADK Go 2.0 GA date on the 2.0 landing page
* fix(docs): standardize ADK Go 2.0 install/import on /v2 @ v2.0.0
* updating announcement banner
* routes snippets updates
* 2.0 install instructions clean-up
* updating collaboration docs for go v2 + new example snippet
---------
Co-authored-by: Karol Piotrowicz <kpiotrowicz@google.com>
* Updated the python code sample for routing.
* Simplified the routing sample
* Update routes.md
add more indent to "if" statement return for readability
---------
Co-authored-by: Joe Fernandez <joefernandez@users.noreply.github.com>