add camera pose getter and local pose setter

[lhy0807]

add camera pose getter and local setter

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context.
List any dependencies that are required for this change.

Fixes #1034 (issue)

Type of change

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Screenshots

N/A. Only code interface changes.

Checklist

• I have run the pre-commit checks with ./isaaclab.sh --format
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have updated the changelog and the corresponding version in the extension's config/extension.toml file
• I have added my name to the CONTRIBUTORS.md or my name already exists there