[BUG] Generated rust DigitalOcean API not compiling due to several errors

[axos88]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

Running

docker run --rm -v $PWD:/local openapitools/openapi-generator-cli:latest generate     -i https://api-engineering.nyc3.digitaloceanspaces.com/spec-ci/DigitalOcean-public.v2.yaml     -g rust     -o /local

generates a project with several issues:

• missing enum variant suffixes in droplet_actions_post_request.rs
• unknown_base_type: models::UNKNOWN_BASE_TYPE in uptime_api.rs
• combining serde_with with serde_as
• Box<Vec> missing generic type parameters
• SshKeysGetSshKeyIdentifierParameter seems to be empty and missing a Display implementation

openapi-generator version

latest