Official v2.0.0 Release

[thrawn01]

Purpose

In preparation for a major breaking changes and a possible v3 release, I would like to make an official v2 release and branch which we can apply patches to as we work on v3. This branch will remain track any changes and releases to the v2 branch of development. (Unless someone has a better idea)

Changes

• Major clean up of non *.go files
• Moved most contributed files for k8s and helm into contrib/
• Moved documentation into docs/
• Removed unnecessary directories and files
• Remove MultiRegion and it's config options as they never worked and were never finished in the v2 line as I had hoped.
• Switched to using buf as our main method of building proto buf files
• Documentation clean up
• Re-created the architecture.png diagram in excalidraw
• Added a linter make lint
• Fixed all the linter warnings

[Baliedge]

Consider adding 1.21 to GHA checks and remove 1.19.