Improve azure apps snapshoting

[arstanaly]

• WIP: use zip files to get container logs of azure web apps
• Azure: start working on pulling digests from ACR for artifacts in azure env snapshot
• WIP: continue working on azue snapshot digests from acr
• WIP: add additional debug statements
• fix go dependenacies [ci skip]
• cmd: get fingerprints for artifacts in azure snapshot cmd when it is not available in docker logs. #kosli-dev/server#898
• cmd: rename azure snapshot command for simplicity and enable users to choose digests source for artifacts in a snapshot
• Tests: add tests to cover azure snapshots
• cmd: rename fields in azure snaphot payload for consistency
• cmd: rename fields in azure snapshot payload. update azure snapshots tests