* logging: added Logger.Debugw(message, key1, value1, ..., keyN, valueN)
This is based on ZAP and allows structural logs to be emitted.
* cli: added --json-log-console and --json-log-file flags
* logging: updated storage logging wrapper to use structural logging
* pr feedback
* cli: Added --max-examples-per-bucket flag to 'kopia snapshot estimate'
Added and cleaned up a bunch of unit tests.
Fixes#1054
* cli: misc tests to increase code coverage of the cli package
* ci: move code coverage run into separate GH job
Removed Warning, Notify and Fatal:
* `Warning` => `Error` or `Info`
* `Notify` => `Info`
* `Fatal` was never used.
Note that --log-level=warning is still supported for backwards
compatibility, but it is the same as --log-level=error.
Co-authored-by: Julio López <julio+gh@kasten.io>
* uitask: added support for reporting string progress info
* server: report current directory as task progress
* snapshot: created reusable Estimate() method to be used during upload, cli estimate and via API
* cli: switched to snapshotfs.Estimate()
* server: added API to estimate snapshot size
* kopia-ui: fixed directory selector
* htmlui: streamlined new snapshot flow and cleaned up policy setting
See https://youtu.be/8p6csuoB3kg
* uitask: added package for managing and introspection into tasks running inside the process
* server: added API for getting details of tasks running inside the server
* htmlui: added new tab called 'Tasks'
This allows access to progres, logs and cancelation for long-running
tasks (Snapshots, Maintenance, and in the future Restore, Estimate,
Verify)
* snapshot: improve counters returned from the upload
