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_test.go

@@ -52,7 +52,7 @@ func TestSSH(t *testing.T) {
 		})
 		coderdtest.AwaitTemplateVersionJob(t, client, version.ID)
 		template := coderdtest.CreateTemplate(t, client, user.OrganizationID, version.ID)
-		workspace := coderdtest.CreateWorkspace(t, client, codersdk.Me, template.ID)
+		workspace := coderdtest.CreateWorkspace(t, client, user.OrganizationID, template.ID)
 		cmd, root := clitest.New(t, "ssh", workspace.Name)
 		clitest.SetupConfig(t, client, root)
 		doneChan := make(chan struct{})
@@ -105,7 +105,7 @@ func TestSSH(t *testing.T) {
 		})
 		coderdtest.AwaitTemplateVersionJob(t, client, version.ID)
 		template := coderdtest.CreateTemplate(t, client, user.OrganizationID, version.ID)
-		workspace := coderdtest.CreateWorkspace(t, client, codersdk.Me, template.ID)
+		workspace := coderdtest.CreateWorkspace(t, client, user.OrganizationID, template.ID)
 		go func() {
 			// Run this async so the SSH command has to wait for
 			// the build and agent to connect!