[Bug] Simulation result is not always JSON compatible

[SimonAtWattscout]

As I understand, the simulation results are supposed to be JSON compatible.
However, in edge cases the results include Infinity, -Infinity and NaN.
Those are by defintion not strict JSON compatible and results in an error in other languages like TypeScript/JavaScript when calling json.parse()

Example output for a simulation with PV, Inverter, Battery and demand:

{ ...
"energy_storage": [
    { ...
    "timeseries_soc": {
                "unit": "kWh",
                "value": [-Infinity, -Infinity, NaN, ... ]
                 },
     ... }],
...}

Possible Solutions:

• Parsing Infinity, -Infinity and NaN as null which is supported by JSON -> Issue: loosing information because NaN is definitely not the same as Infinity, same with -Infinity vs Infinity
• Parsing them as strings like 'Infinity' , ' -Infinity' and 'NaN' -> Issue: Now the type of a timeseries is a bit muddled because it is a mix between numbers and strings in the array
• Parsing Infinity and -Infinity as 1e9999 and -1e9999 or another extremely high number and NaN as null (Best solution in my opinion)
• Letting the end user handle it but then please make a comment in the documentation