* Add a generic method for loading an operations backend in non-init commands
* Refactor commands to use new prepareBackend method: group 1
* Refactor commands to use new prepareBackend method: group 2, where config parsing needs to be explicitly added
* Refactor commands to use new prepareBackend method: group 3, where we can use already parsed config
* Additional, more nested, places where logic for accessing backends needs to be refactored
* Remove duplicated comment
* Add test coverage of `(m *Meta) prepareBackend()`
* Add TODO related to using plans for backend/state_store config in apply commands
* Add `testStateStoreMockWithChunkNegotiation` test helper
* Add assertions to tests about the backend (remote-state, local, etc) in use within operations backend
* Stop prepareBackend taking locks as argument
* Code comment in prepareBackend
* Replace c.Meta.prepareBackend with c.prepareBackend
* Change `c.Meta.loadSingleModule` to `c.loadSingleModule`
* Rename (Meta).prepareBackend to (Meta).backend, update godoc comment to make relationship to (Meta).Backend more obvious.
* Revert change from config.Module to config.Root.Module
* Update `(m *Meta) backend` method to parse config itself, and also to adhere to calling code's viewtype instructions
* Update all tests and calling code following previous commit
* Change how an operations backend is obtained by autocomplete code
* Update autocomplete to return nil if no workspace names are returned from the backend
* Add test coverage for autocompleting workspace names when using a pluggable state store
* Fix output command: pass view type data to new `backend` method
* Fix in plan command: pass correct view type to `backend` method
* Fix `providers schema` command to use correct viewtype when preparing a backend
* Update comments to distinguish between operations and state-storage backends more clearly
* Rename `BackendOpts` field `Config` to more specific `BackendConfig`
* WIP
* Reuse plan command for query CLI
* Basic CLI output
* Only fail a list request on error
* poc: store query results in separate field
* WIP: odd mixture between JSONs
* Fix list references
* Separate JSON rendering
The structured JSON now only logs a status on which list query is
currently running. The new jsonlist package can marshal the query fields
of a plan.
* Remove matcher
* Store results in an extra struct
* Structured list result logging
* Move list result output into hooks
* Add help text and additional flag
* Disable query runs with the cloud backend for now
* Review feedback
