New usage md and breaking changes list

[marandaneto]

What does this PR do?

#skip-changelog

Where should the reviewer start?

How should this be manually tested?

Any background context you want to provide?

What are the relevant tickets?

Screenshots or screencasts (if UI/UX change)

Questions:

• Does the docs need an update?
• Are there any security concerns?
• Do we need to update engineering / success?

[marandaneto]

Traditionally we have always pushed people to our docs rather than including instructions in github - trying to avoid duplication. Given this is pre-release though, makes sense and then we can make a call after release

I agree, but right now the docs are structured to only support stable versions unfortunately, no plans to add a dropdown versioning on the docs for now, so better to keep it here till we get to RC and/or stable. I have a draft PR on the docs replacing the code snippets locally but it'd just cause issues for current customers if merged.