Enhance error handling in OxiAPI and Node classes

- Updated the `reload` method in the `OxiAPI` class to catch `HTTPError` exceptions and raise a custom `OxiAPIError` with context.
- Improved the `__call__` method in the `Node` class to handle `HTTPError` exceptions similarly, providing context-specific error messages.
- Introduced a new class method `from_http_error` in `OxiAPIError` for standardized error message generation based on HTTP status codes.

oxi/node.py

@@ -1,5 +1,9 @@
 from typing import TYPE_CHECKING
 
+from requests import HTTPError
+
+from oxi.exception import OxiAPIError
+
 from .view import NodeView
 
 
@@ -7,18 +11,20 @@ if TYPE_CHECKING:
     from requests import Session
 
 
-# TODO: Add type hints
 class Node:
     def __init__(self, session: "Session", base_url: str):
         self._session = session
         self._base_url = base_url
 
     def __call__(self, name: str) -> NodeView:
-        url = f"{self._base_url}/node/show/{name}"
-        if not url.endswith(".json"):
-            url += ".json"
-        response = self._session.get(url)
-        response.raise_for_status()
+        try:
+            url = f"{self._base_url}/node/show/{name}"
+            if not url.endswith(".json"):
+                url += ".json"
+            response = self._session.get(url)
+            response.raise_for_status()
+        except HTTPError as e:
+            raise OxiAPIError.from_http_error(e, context=f"Node {name}") from e
         return NodeView(
             session=self._session, base_url=self._base_url, data=response.json()
         )