added METISSE as submodule (COSMIC-PopSynth#629)

* added METISSE as submodule

* try ssedict for one test

Author: poojanagrawal

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "src/cosmic/src/METISSE"]
+	path = src/cosmic/src/METISSE
+	url = git@github.com:TeamMETISSE/METISSE.git

src/cosmic/src/METISSE

@@ -36,6 +36,8 @@
 BSEDict['don_lim'] = -1
 BSEDict['acc_lim'] = -1
 BSEDict['wd_mass_lim'] = 0
+SSEDict = {'stellar_engine': 'sse'}
+
 
 class TestEvolve(unittest.TestCase):
     """`TestCase` for the cosmic
@@ -44,7 +46,7 @@ def test_single_evolve_with_table(self):
 
         # Check that the sample_primary function samples mass correctly
         EvolvedBinaryBPP, EvolvedBinaryBCM, initCond, kick_info = Evolve.evolve(
-            initialbinarytable=INIT_CONDITIONS, randomseed=523574)
+            initialbinarytable=INIT_CONDITIONS, randomseed=523574, SSEDict=SSEDict)
 
         pd.testing.assert_frame_equal(EvolvedBinaryBPP, BPP_DF, check_dtype=False, check_exact=False)
         pd.testing.assert_frame_equal(EvolvedBinaryBCM, BCM_DF, check_dtype=False, check_exact=False)