fix(room): Add a property to exclude floor area from larger models

[chriswmackey]

This is partly trying to address this issue: https://github.com/ladybug-tools/honeybee-core/issues/509

[github-actions[bot]]

:tada: This PR is included in version 1.49.23 :tada:

The release is available on:

• GitHub release
• v1.49.23

Your semantic-release bot :package::rocket: