[R] GCS/S3 Improvements

[asfimport]

Umbrella ticket for issues relating to improvements to functionality relating to GCS and S3.

Reporter: Nicola Crane / @thisisnic

Subtasks:

• [R] Access S3 files by version
• [R] Proxy support for S3 File systems
• [R] Test GCS auth with gargle/googleAuthR
• [R] Bindings for GcsFileSystem FromImpersonatedServiceAccount
• [R] Cannot override environmental variables setting AWS S3 region
• [R] Configure curl timeout policy for S3
• [R] read_parquet shows misleading message about url scheme when reading from s3 failed
• [R] AWS SSO for R package

_{Note: This issue was originally created as ARROW-18180. Please see the migration documentation for further details.}

[thisisnic]

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