implement stub instruction profiler plugin

mythril/laser/ethereum/plugins/implementations/instruction_profiler_plugin.py

@@ -0,0 +1,19 @@
+from mythril.laser.ethereum.svm import LaserEVM
+from mythril.laser.ethereum.plugins.plugin import LaserPlugin
+from mythril.laser.ethereum.state.global_state import GlobalState
+
+
+class InstructionProfilerPlugin(LaserPlugin):
+    """ Instruction profiler plugin
+
+    This plugin implements the logic that profiles the execution for the different instructions
+    It does so by measuring the frequency and duration of each operation execution
+    """
+
+    def initialize(self, symbolic_vm: LaserEVM):
+        """Initializes the instruction profiler
+
+        Introduces hooks that measure the duration of each execution and the name of the instruction being executed
+        :param symbolic_vm: The virtual machine to initialize the plugin for
+        """
+        pass