Add more attributes to object_store::Attribute

[netthier]

Which issue does this PR close?

Closes #5689.

What changes are included in this PR?

This PR adds Attribute::ContentDisposition, Attribute::ContentEncoding and Attribute::ContentLanguage and implements them for the http, aws, azure and gcp clients.

Are there any user-facing changes?

Yes, the new aforementioned variants. However, as the enum is marked #[non_exhaustive], this shouldn't be a breaking change.

Note

I tried running the integration tests, but was unable to pass gcs_test and azure_blob_test. However, I got exactly the same failures on master. s3_test passed, though another test from the aws suite failed.
I posted about this on Discord and would appreciate guidance or a fix to more thoroughly test this change.

Message text

Is the `CONTRIBUTING.md` for object_store outdated? None of the tests complete fully successfully for me, even on master, seemingly related to missing options or environment variables. AWS tests seem to be missing `EC2_METADATA_ENDPOINT`, Azure the container name and GCP a bucket name and private key ID.

Attempting to manually provide the container name in the case of Azure (I'm assuming test-bucket leads to a test failure in azure_blob_test: https://paste.debian.net/hidden/8b5a7f1f/

Manually providing the missing options for GCP (adding a private_key_id field to the JSON and setting the bucket name) still leads to some test failures: https://paste.debian.net/hidden/05fec244/

[tustvold]

Love it, thank you