:bug: Source Google Ads: added handling for 401 error while parsing response. added metrics.cost_micros to ad_groups stream

[darynaishchenko]

What

resolved: https://github.com/airbytehq/oncall/issues/3466 401 Request is missing required authentication credential

resolved: https://github.com/airbytehq/airbyte/issues/19455

How

Added config error in case of 401 error. Updated ad_groups schema.

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[!WARNING] 🚨 Connector code freeze is in effect until 2024-01-02. This PR is changing connector code. Please contact the current OC engineers if you want to merge this change to master.

[tolik0]

@darynaishchenko, the update to add a new field to the ad_group stream is leading to errors for users with the connector set up using a manager account. This is because metrics are not accessible for manager accounts. Here's a snippet from the log indicating the issue:

2024-01-11 18:05:50 source > Marking stream ad_group as STARTED
2024-01-11 18:05:50 source > Syncing stream: ad_group 
2024-01-11 18:05:51 source > Request made: ClientCustomerId: 9016006472, Host: googleads.googleapis.com, Method: /google.ads.googleads.v15.services.GoogleAdsService/Search, RequestId: 07AX5lxXUaVGq_jhuKSV3w, IsFault: True, FaultMessage: Metrics cannot be requested for a manager account. To retrieve metrics, issue separate requests against each client account under the manager account.
2024-01-11 18:05:51 source > Finished syncing ad_group
2024-01-11 18:05:51 source > SourceGoogleAds runtimes:
Syncing stream ad_group 0:00:00.317514
2024-01-11 18:05:51 source > (<_InactiveRpcError of RPC that terminated with:
        status = StatusCode.INVALID_ARGUMENT
        details = "Request contains an invalid argument."
        debug_error_string = "UNKNOWN:Error received from peer ipv4:142.251.208.170:443 {created_time:"2024-01-11T18:05:51.006095582+00:00", grpc_status:3, grpc_message:"Request contains an invalid argument."}"
>, <_InactiveRpcError of RPC that terminated with:
        status = StatusCode.INVALID_ARGUMENT
        details = "Request contains an invalid argument."
        debug_error_string = "UNKNOWN:Error received from peer ipv4:142.251.208.170:443 {created_time:"2024-01-11T18:05:51.006095582+00:00", grpc_status:3, grpc_message:"Request contains an invalid argument."}"
>, errors {
  error_code {
    query_error: REQUESTED_METRICS_FOR_MANAGER

Since blocking this stream for manager accounts impacts other customers' data, I suggest we revert this change.