New CFG Generator

Signed-off-by: Gaurav Kukreja <gaurav@gauravk.in>

cfg_generator/cfg.py

+import sys
+
+class BBEdge:
+    def __init__(self, fromBlockIndex, toBlockIndex):
+        self.fromBlockIndex = fromBlockIndex;
+        self.toBlockIndex = toBlockIndex;
+
+class BasicBlock:
+    def __init__(self, startLine, endLine):
+        self.startLine = startLine;
+        self.endLine = endLine;
+
+class ControlFlowGraph:
+    def __init__(self, listBlocks, listEdges):
+        self.listBlocks = listBlocks
+        self.listEdges = listEdges
+        
+class FunctionDesc:
+    def __init__(self, functionName, fileName, startLine, endLine, cfg):
+        self.functionName = functionName
+        self.fileName = fileName
+        self.startLine = startLine
+        self.endLine = endLine
+        self.cfg = cfg
+        
+ 
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