Namespace Related Events

## Element handling

def handle_event("element:create", payload, socket) do
  # ...
end

def handle_event("element:update", payload, socket) do
  # ...
end

def handle_event("element:delete", payload, socket) do
  # ...
end

## Layer handling

def handle_event("layer:create", payload, socket) do
  # ...
end

def handle_event("layer:update_styles", payload, socket) do
  # ...
end

def handle_event("layer:merge", payload, socket) do
  # ...
end

## Collaborative updates

def handle_event("sync:cursor_moved", payload, socket) do
  # ...
end

def handle_event("sync:presence_diff", payload, socket) do
  # ...
end