Changes
=======
* Allow link_type, link_name and dataverse_name to be optional
* Raise invalid_argument if a link_name is provided but a dataverse_name
  is not

…lace_raw

Co-authored-by: Sergey Avseyev <[email protected]>

SDK-RFC #47 expects space after version and all extra information must
be surrounded with parentheses.

Additionally this patch allows wrappers to override the ID during
compile time, so that C++SDK version will be moved to the extras section
of the identifier.

* standalone C++SDK build ("cbc" is runtime extra part)

    "cxx/1.0.3+5.1.074ce40c (Darwin/arm64;ssl/0x30400000;cbc)"

* cmake -DCOUCHBASE_CXX_CLIENT_WRAPPER_UNIFIED_ID=ruby/4.5.3

    "ruby/4.5.3 (cxx/1.0.3+5.1.074ce40c;Darwin/arm64;ssl/0x30400000;cbc)"

…#695)

…esponse (#699)

"requestID", "clientContextID" and "metrics" might be missing.

For example, the following payload might be sent with status 503:

    {
      "errors": [
        {
          "code": 23000,
          "msg": "Analytics Service is temporarily unavailable"
        }
      ],
      "status": "fatal"
    }