Allow using a custom external httpx client (#5)

* Allow using a custom external `httpx` client

* Update __init__.py

* Update __init__.py

* Update __init__.py

* Update formatting

Co-authored-by: Fabian Affolter <[email protected]>

Author: GuyKh

glances_api/__init__.py

@@ -22,6 +22,7 @@ def __init__(
         verify_ssl=True,
         username=None,
         password=None,
+        httpx_client=None,
     ):
         """Initialize the connection."""
         schema = "https" if ssl else "http"
@@ -33,13 +34,20 @@ def __init__(
         self.username = username
         self.password = password
         self.verify_ssl = verify_ssl
+        self.httpx_client = httpx_client
 
     async def get_data(self, endpoint):
         """Retrieve the data."""
         url = "{}/{}".format(self.url, endpoint)
 
+        httpx_client = (
+            self.httpx_client
+            if self.httpx_client
+            else httpx.AsyncClient(verify=self.verify_ssl)
+        )
+
         try:
-            async with httpx.AsyncClient(verify=self.verify_ssl) as client:
+            async with httpx_client as client:
                 if self.password is None:
                     response = await client.get(str(url))
                 else: