Implement exec command for running raw Python code

commands/exec.py

@@ -0,0 +1,16 @@
+import main
+
+class ExecCommand:
+    def __init__(self, *args):
+        self.exec(*args)
+
+    def exec(self, addr, authed, data, obj, spl, success, failure, info, incUsage, length):
+        if authed:
+            if length > 1:
+                info(str(exec(" ".join(spl[1:]))))
+                return
+            else:
+                incUsage("exec")
+                return
+        else:
+            incUsage(None)