Add dynamic surface fluxes to class

[Peter9192]

Class should have dynamic surface fluxes like so:

    "wthl": [
        0.33137200988670706,
        0.28088430353706567,
        0.21148639643745845,
        0.1354453158978963,
        0.0558820378352221,
        0.0001602229911650289,
        0.0,
        0.0,
        0.0,
        0.0,
        0.0,
        0.0
    ],
    "wqt": [
        1.9756698748096824e-05,
        2.111953654093668e-05,
        2.2018328309059143e-05,
        2.2002774130669422e-05,
        1.9648385205073282e-05,
        1.6331905499100685e-05,
        1.3947577826911584e-05,
        1.2534562301880214e-05,
        1.1651739441731479e-05,
        1.1526963135111146e-05,
        1.3352756468520965e-05,
        1.3273539479996543e-05
    ],

[Peter9192]

Closed in #144