Expose all Rerun enums and types to main module scope

[nikolausWest]

Expose AnnotationInfo, ClassDescription, LogLevel, MeshFormat, RectFormat, and ImageFormat to the top level rerun module scope so you only need to import rerun as rr to use these types.

Note: no change of user code is needed

The old ways of importing these types (e.g. from rerun.log.annotation import AnnotationInfo will continue to work like before. However, these types will now be easier to access as they are available directly under the main module scope (e.g. rr.AnnotationInfo) without requiring an explicit import.

TODO

• Update examples
• Update examples README to remind users to match the version of the repository to their rerun-sdk version
• Update examples docs to remind users to match the version of the repository to their rerun-sdk version (Remind users to match versions of SDK and examples rerun-docs#55)

Checklist

• I have read and agree to Contributor Guide and the Code of Conduct
• I've included a screenshot or gif (if applicable)

[emilk]

Looks good!

Does the old code (from rerun.log.annotation import AnnotationInfo) still work?

In any case, please add a short migration guide to the PR description for our users, listing all identifiers that are now found under rr.

[nikolausWest]

Does the old code (from rerun.log.annotation import AnnotationInfo) still work?

Yes