Add multi-period parameters to dispatchable

src/oemof/tabular/facades/dispatchable.py

@@ -39,6 +39,18 @@ class Dispatchable(Source, Facade):
         Max install capacity if capacity is to be expanded
     capacity_minimum: numeric
         Minimum install capacity if capacity is to be expanded
+    lifetime: int (optional)
+        Lifetime of the component in years. Necessary for multi-period
+        investment optimization.
+        Note: Only applicable for a multi-period model. Default: None.
+    age : int (optional)
+        The initial age of a flow (usually given in years);
+        once it reaches its lifetime (considering also
+        an initial age), the flow is forced to 0.
+        Note: Only applicable for a multi-period model. Default: None.
+    fixed_costs : numeric (iterable or scalar) (optional)
+        The fixed costs associated with a flow.
+        Note: Only applicable for a multi-period model. Default: None.
 
 
     The mathematical representations for these components are dependent on the
@@ -109,6 +121,12 @@ class Dispatchable(Source, Facade):
 
     capacity_cost: float = None
 
+    lifetime: int = None
+
+    age: int = None
+
+    fixed_costs: Union[float, Sequence[float]] = None
+
     capacity_minimum: float = None
 
     expandable: bool = False