Implement API type validation on the client side

[karencfv]

Would like to have validation on the client side to verify whether the value of a type is acceptable or not.

For example: If the only acceptable values for BlockSize during a disk create are 512, 2048 or 4096, we'd like to validate before an API call is made

[sudomateo]

I marked the following issues as duplicates of this issue.

• SSE-104

I marked the following issues as related to this issue.

• SSE-99
• SSE-114

I'm seeing a general theme to improve validation here. I think this should manifest as some validation error that's exposed by this SDK. Similar to our HTTPError today, we could introduce some ValidationError that's returned when the validation fails for a given type. That way callers can assert on that error.

Since I'm in the middle of issue triage I'll mark this one as backlog and perhaps update the SSE-114 to contain sub-issues for the various work we're looking to do.