* assert provisioner daemon version and api_version in unit tests
* add build info in HTTP header, extract codersdk.BuildVersionHeader
* add api_version to codersdk.ProvisionerDaemon
* testutil.MustString -> testutil.MustRandString
Adds column api_version to the provisioner_daemons table.
This is distinct from the coderd version, and is used to handle breaking changes in the provisioner daemon API.
* chore: add /v2 to import module path
go mod requires semantic versioning with versions greater than 1.x
This was a mechanical update by running:
```
go install github.com/marwan-at-work/mod/cmd/mod@latest
mod upgrade
```
Migrate generated files to import /v2
* Fix gen
* chore: rename startup logs to agent logs
This also adds a `source` property to every agent log. It
should allow us to group logs and display them nicer in
the UI as they stream in.
* Fix migration order
* Fix naming
* Rename the frontend
* Fix tests
* Fix down migration
* Match enums for workspace agent logs
* Fix inserting log source
* Fix migration order
* Fix logs tests
* Fix psql insert
