Rest framework (#24)

* Add rest framework for API: First Commit

* modify some shell scripts to make variable references safer; modify some python scripts to reduce the code complexity and cyclomatic complexity of functions.

* Add REST API for some webvirtcloud functions. Instance list/delete/create, compute list/delete/create, storages-network list/retrieve. Add swagger and redoc for API interface

* update requirements

Co-authored-by: herengui <herengui@uniontech.com>

interfaces/api/serializers.py

@@ -0,0 +1,11 @@
+
+from rest_framework import serializers
+from interfaces.models import Interfaces
+
+
+class InterfacesSerializer(serializers.ModelSerializer):
+        
+    class Meta:
+        model = Interfaces
+        fields = ['name', 'type', 'state', 'mac'] 
+