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`.

coderd/httpmw/httpmw.go

@@ -20,12 +20,6 @@ func parseUUID(rw http.ResponseWriter, r *http.Request, param string) (uuid.UUID
 		return uuid.UUID{}, false
 	}
 
-	// Automatically set uuid.Nil to the acting users id.
-	if param == UserKey && rawID == "me" {
-		key := APIKey(r)
-		return key.UserID, true
-	}
-
 	parsed, err := uuid.Parse(rawID)
 	if err != nil {
 		httpapi.Write(rw, http.StatusBadRequest, httpapi.Response{

coderd/httpmw/userparam.go

@@ -5,12 +5,13 @@ import (
 	"fmt"
 	"net/http"
 
+	"github.com/go-chi/chi/v5"
+	"github.com/google/uuid"
+
 	"github.com/coder/coder/coderd/database"
 	"github.com/coder/coder/coderd/httpapi"
 )
 
-const UserKey = "user"
-
 type userParamContextKey struct{}
 
 // UserParam returns the user from the ExtractUserParam handler.
@@ -26,9 +27,15 @@ func UserParam(r *http.Request) database.User {
 func ExtractUserParam(db database.Store) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
-			userID, ok := parseUUID(rw, r, UserKey)
-			if !ok {
-				return
+			var userID uuid.UUID
+			if chi.URLParam(r, "user") == "me" {
+				userID = APIKey(r).UserID
+			} else {
+				var ok bool
+				userID, ok = parseUUID(rw, r, "user")
+				if !ok {
+					return
+				}
 			}
 
 			apiKey := APIKey(r)