[FEATURE] Pin tool bar

[LuisFX]

Add feature to pin the tool bar for multiple tool selections before designing flow Most times while designing flows, it makes sense adding a few boilerplate nodes to the graph to represent the initial flow. As when when designing a sequential flow it would be much more fluent to add the following nodes before working on the flow (minimum): start, end, agent, state, agent memory and an llm.

Other requirements also require the use of several dependent nodes to be useful, so adding all the nodes prior to hooking them up, would streamline the work and ease the mental distance to get the work done.

[Crispin-Courtenay]

I wonder if this could be solved in a flow chart program such as Lucid Chart or Whimsical, for that matter, Node-RED has much of the same functionality.