feat: Move workspaces under organizations (#1109)

This removes split ownership for workspaces. They are now
a resource of organizations and have a designated owner,
which is a user.

This enables simple administration for commands like:
- `coder stop ben/dev`
- `coder build logs colin/arch`

or if we decide to allow administrators to access workspaces,
they could even SSH using this syntax: `coder ssh colin/dev`.

cli/ssh.go

@@ -33,9 +33,13 @@ func ssh() *cobra.Command {
 			if err != nil {
 				return err
 			}
+			organization, err := currentOrganization(cmd, client)
+			if err != nil {
+				return err
+			}
 
 			workspaceParts := strings.Split(args[0], ".")
-			workspace, err := client.WorkspaceByName(cmd.Context(), codersdk.Me, workspaceParts[0])
+			workspace, err := client.WorkspaceByOwnerAndName(cmd.Context(), organization.ID, codersdk.Me, workspaceParts[0])
 			if err != nil {
 				return err
 			}