chore: create workspaces and templates for multiple orgs (#13866)

* chore: creating workspaces and templates to work with orgs
* handle wrong org selected
* create org member in coderdtest helper

codersdk/organizations.go

@@ -365,6 +365,7 @@ func (c *Client) TemplatesByOrganization(ctx context.Context, organizationID uui
 
 type TemplateFilter struct {
 	OrganizationID uuid.UUID
+	ExactName      string
 }
 
 // asRequestOption returns a function that can be used in (*Client).Request.
@@ -378,6 +379,10 @@ func (f TemplateFilter) asRequestOption() RequestOption {
 			params = append(params, fmt.Sprintf("organization:%q", f.OrganizationID.String()))
 		}
 
+		if f.ExactName != "" {
+			params = append(params, fmt.Sprintf("exact_name:%q", f.ExactName))
+		}
+
 		q := r.URL.Query()
 		q.Set("q", strings.Join(params, " "))
 		r.URL.RawQuery = q.Encode()