Update IMRPhenomTPHMParity

-Created a setup.py file -reformatted parity.py to match the parity_TPHM.py

waveform/parity_XPHM.py

+def gen(**kwds):
+    from pycbc.waveform import get_fd_waveform
+    import lal
+    #print(kwds)
+
+    if 'approximant' in kwds:
+        kwds.pop("approximant")
+    hp, hc = get_fd_waveform(approximant="IMRPhenomXPHM", **kwds)
+
+    temp =  kwds['parity_amu'] / 1e9 / lal.QE_SI * lal.H_SI * lal.PI * lal.PI / lal.H0_SI
+
+    hp_parity = hp + hc * temp * hp.sample_frequencies **2
+    hc_parity = hc - hp * temp * hp.sample_frequencies **2
+
+    return hp_parity, hc_parity
+
+
+#pycbc.waveform.add_custom_waveform('IMRPhenomParity', IMRPhenomParity, 'frequency', force=True)
+
+def add_me(**kwds):
+    kwds['cpu_fd']['IMRPhenomXPHMParity'] = gen
+    kwds['filter_time_lengths']['IMRPhenomXPHMParity'] = kwds['filter_time_lengths']['IMRPhenomXPHM']
+