Info auto-transfer by ConnectHelper

We could make transferring infos from one sopt to another (or multiple other) more convenient.

Instead of having the user to write code to check if the resp. info is available, and then pass it to try_connect, we could construct the helper with instructions for that, and automate the process for default use cases.

added components coupling feature usability labels

Trying out a possible syntax...

self.try_connect(
    in_info_rules = {
        "In1": [
            FromInput("In2", "grid", "units"), # Get grid and units from In2
            FromOutput("Out1", "units"),       # Get from Out1
            FromValue("units", "m"),           # Set units to a value
        ],
        "In2": [
            FromOutput("Out1"),        # Get the complete info from output Out1
        ]
    }
    out_info_rules = {
        
    }
}

Implemented with exactly this syntax in !154 (merged).

mentioned in merge request !154 (merged)

changed the description

mentioned in commit 93eab84b

closed with merge request !154 (merged)

changed milestone to %release-0.4