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/parameters.go

@@ -53,7 +53,7 @@ func parseScopeAndID(ctx context.Context, client *codersdk.Client, organization
 		}
 		scopeID = user.ID
 	case codersdk.ParameterWorkspace:
-		workspace, err := client.WorkspaceByName(ctx, codersdk.Me, name)
+		workspace, err := client.WorkspaceByOwnerAndName(ctx, organization.ID, codersdk.Me, name)
 		if err != nil {
 			return scope, uuid.Nil, err
 		}