[V6] Make http service use v0 routes by default (#41)

Made API version to be '/v0' by default. Other options are '/v1' or
'/latest', also '' is option which default to v0 for backwards
compatibility reasons I believe. Tested on local network and client
functions as expected.

V8 branch will pass 'v1' for the version, or we can make it
programatically in the code decide whether to pass v0 or v1 somehow
depending on how we want to roll out v8

dkg/providers/node_http.py

@@ -25,9 +25,18 @@
 
 
 class NodeHTTPProvider:
-    def __init__(self, endpoint_uri: URI | str, auth_token: str | None = None):
+    def __init__(
+        self,
+        endpoint_uri: URI | str,
+        auth_token: str | None = None,
+        api_version: str = "v0",
+    ):
         self.endpoint_uri = URI(endpoint_uri)
         self.auth_token = auth_token
+        self.api_version = api_version
+
+    def get_full_url(self, path: str) -> str:
+        return f"{self.endpoint_uri}/{self.api_version}/{path}"
 
     def make_request(
         self,
@@ -36,7 +45,7 @@ def make_request(
         params: dict[str, Any] = {},
         data: dict[str, Any] = {},
     ) -> NodeResponseDict:
-        url = f"{self.endpoint_uri}/{path}"
+        url = self.get_full_url(path)
         headers = (
             {"Authorization": f"Bearer {self.auth_token}"} if self.auth_token else {}
         )