scripts: add a line-count statistic script

scripts/statistics.py

+mymap = {}
+last = ""
+
+with open("../build/XSSimTop.v", "r") as f:
+    line = f.readline()
+    cnt = 0
+    while(line):
+        if "module " in line:
+            if last!="" :
+                mymap[last] = cnt
+            last = line[6:-2]
+            cnt = 1
+        else:
+            cnt = cnt + 1
+        line = f.readline()
+    for k,v in mymap.items():
+        print(k, v)
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