Print node and string formatting

[siriusxiv]

The Print node should be able to take into argument any type (and automatically convert it into string using a default StringFormat), and not only string type. Another solution is to integrate the "format string" into the Print node (so we will have a Print node with 3 inputs).
Currently, we must use another node to convert into string the data we want to output. This is not very convenient and takes a lot of space on a small screen. See the example below.

[siriusxiv]

Same case for the UniformFloat node:

In the GUI, we should not have to manually add this node. Linking a float and Uniform variable should be automatic.