DOC: Add Rest Auth catalog property documentation

[sungwy]

Feature Request / Improvement

Similar to the Lock catalog and Hadoop Configuration documentation under Catalog Properties section under the Configurations page, we should have a section on Auth properties for the REST Catalog.

Related issue: #13009

Auth Properties: https://github.com/apache/iceberg/blob/2cdff366982b30685f6410c290cbd16aed274caf/core/src/main/java/org/apache/iceberg/rest/auth/AuthProperties.java

Query engine

None

Willingness to contribute

• I can contribute this improvement/feature independently
• I would be willing to contribute this improvement/feature with guidance from the Iceberg community
• I cannot contribute this improvement/feature at this time

[sungwy]

Hi @dsillman2000 I see you started working on a PR to address this issue. Would you like me to assign this issue to you?