[Other] Optimize runtime module (#1211)

* modify ort option

* update code

* Unify backend

fastdeploy/runtime/backends/backend.h

@@ -56,6 +56,11 @@ class BaseBackend {
 
   virtual bool Initialized() const { return initialized_; }
 
+  virtual bool Init(const RuntimeOption& option) {
+    FDERROR << "Not Implement Yet." << std::endl;
+    return false;
+  }
+
   // Get number of inputs of the model
   virtual int NumInputs() const = 0;
   // Get number of outputs of the model