[Bug] Inconsistency in Output and Input types function names.

[gabrik]

Describe the bug

There is an inconsistency in the Output and Input types in the name of the function used to retrieve the ID.

In Input we have:

impl Input {
    pub fn id(&self) -> &PortId {
        &self.id
    }
    ...
}

While in Output we have:

impl Output {
    /// Returns the port id associated with this Output.
    ///
    /// Port ids are unique per type (i.e. Input / Output) and per node.
    pub fn port_id(&self) -> &PortId {
        &self.port_id
    }
    ...
 }   

They should be the same, so either id() or port_id()

To reproduce

N/A

System info

N/A

[gabrik]

Fixed in: ZettaScaleLabs#6