* add backup to operations
Extend the operations set with a backupOperation. New backup
operations are created through an existing repository and, once
created, can be Run synchronously.
Integration tests have a skeleton, but the meat of them is on hold
while dependencies undergo implementation.
* remove operation progress
* Add function to open kopia and keep handle
* Add kopia handle in Repository
* Have Repository manage lifetime of KopiaWrapper
* Have CLI manage lifetime of Repository
* add e2e wiring of cli to kopia
Now that pkg/storage and internal/kopia are in place, we
can wire up the init flow from the cli all the way to kopia. Testing
harness for this functionality still needs investigation afterward.
* factor out awsVars struct for s3Cfg
* introduce repository api scaffold with s3 (#6)
introduces the public repository package in /pkg, with a
skeleton implementation for generating the s3 provider config
and boilerplate for where that usage gets centralized.
* condense init/connect to single action
A double-pass NewRepo() && Connect() allows Repository structs
to exist independent guarantees that their usage will be successful.
This hides the struct generation within the Connect and Initialize
funcs so that the construction and guarantees can occur as
a single process.
