[HCK-11819] Relax authentication method to not only support service account key but also Google Application Default Credentials generated with gcloud (#90)

* Relax authentication methid to not only support service account key but also Google Application Default Credentials generated with gcloud

* Fix dependency

* Update reverse_engineering/connection_settings_modal/connectionSettingsModalConfig.json

Co-authored-by: Thomas Jakemeyn <[email protected]>

* Update reverse_engineering/connection_settings_modal/connectionSettingsModalConfig.json

Co-authored-by: Thomas Jakemeyn <[email protected]>

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Co-authored-by: Thomas Jakemeyn <[email protected]>

Author: bigorn0