moved http client logic to http_client library

invoice_ninja/endpoints/clients.py

@@ -5,11 +5,7 @@ import requests
 
 class Clients(BaseEndpoint):
     uri = '/api/v1/clients'
-
-    def __init__(self, base_url: str = str(), api_token: str = str()):
-        super().__init__(base_url, api_token)
-        self.url = super()._get_url_for('clients')
-
+    
     def __build_sort_params(self, sort: dict):
         sort_params = {'sort': str()}
         is_first_entry = True

invoice_ninja/endpoints/ping.py

@@ -0,0 +1,10 @@
+from invoice_ninja.endpoints.base_endpoint import BaseEndpoint
+
+import requests
+
+class Ping(BaseEndpoint):
+    uri = '/api/v1/ping'
+    
+    def ping(self):
+        pass
+