Added basic system test for nirfsg

Author: Vaishnavigupta1312

src/nirfsg/system_tests/test_system_nirfsg.py

@@ -0,0 +1,23 @@
+import nirfsg
+import numpy as np
+import nirfsg.enums
+ 
+# RFSG session create
+options = "Simulate=0, DriverSetup=Model:5841"
+session  = nirfsg.Session('5841', id_query=False, reset_device=False, options=options)
+# session = nirfsg.Session("5841", id_query=False, reset_device=False, options=options)
+ 
+# configure frequency to 1Ghz, power level to -10db and iq rate to 1M
+session.configure_rf(
+    1e9, # frequency
+    -10  # powerLevel
+    )
+#session.iq_rate = 1e6
+session.generation_mode = nirfsg.GenerationMode.CW
+ 
+# Start generation
+with session.initiate():
+    # Generation context
+    input("Press Enter to stop generation")
+ 
+session.close()