feat(coderd): add matched provisioner daemons information to more places (#15688)

- Refactors `checkProvisioners` into `db2sdk.MatchedProvisioners`
- Adds a separate RBAC subject just for reading provisioner daemons
- Adds matched provisioners information to additional endpoints relating to
  workspace builds and templates
-Updates existing unit tests for above endpoints
-Adds API endpoint for matched provisioners of template dry-run job
-Updates CLI to show warning when creating/starting/stopping/deleting
 workspaces for which no provisoners are available

---------

Co-authored-by: Danny Kopping <danny@coder.com>

coderd/autobuild/lifecycle_executor.go

@@ -245,7 +245,7 @@ func (e *Executor) runOnce(t time.Time) Stats {
 							}
 						}
 
-						nextBuild, job, err = builder.Build(e.ctx, tx, nil, audit.WorkspaceBuildBaggage{IP: "127.0.0.1"})
+						nextBuild, job, _, err = builder.Build(e.ctx, tx, nil, audit.WorkspaceBuildBaggage{IP: "127.0.0.1"})
 						if err != nil {
 							return xerrors.Errorf("build workspace with transition %q: %w", nextTransition, err)
 						}