Godot: display available signals when creating new node

[BlenderNPR]

This is one of those quality of life stuff.
I find out that I often add a node just to look at the available signals.
I know that I can look at the docs; but in the heat of the moment, when idea strikes, I want to know what default signals I can have. The setup may look like this.

[ghost]

aww ignore my prev post plz. nevermind, yeah. +1 QoL feature. possible 3.1 i think maybe iuno. i like it

[groud]

I'm against that, it's overwhelms the interface in a place that is not meant to document nodes. However, a link to the documentation in this panel might not hurt I guess.

[dreamsComeTrue]

image is not available now to see the proposal, but otherwise - you can always jump into attached script or go to Node/Signals tab to view them.

[Calinou]

Feature and improvement proposals for the Godot Engine are now being discussed and reviewed in a dedicated Godot Improvement Proposals (GIP) (godotengine/godot-proposals) issue tracker. The GIP tracker has a detailed issue template designed so that proposals include all the relevant information to start a productive discussion and help the community assess the validity of the proposal for the engine.

The main (godotengine/godot) tracker is now solely dedicated to bug reports and Pull Requests, enabling contributors to have a better focus on bug fixing work. Therefore, we are now closing all older feature proposals on the main issue tracker.

If you are interested in this feature proposal, please open a new proposal on the GIP tracker following the given issue template (after checking that it doesn't exist already). Be sure to reference this closed issue if it includes any relevant discussion (which you are also encouraged to summarize in the new proposal). Thanks in advance!