init: zero-dep dns-over-https resolver

tests/test_live.py

@@ -0,0 +1,7 @@
+from pydoh import resolve
+
+
+def test_live_resolve_example_com():
+    ips = resolve("example.com", use_cache=False)
+    assert len(ips) > 0
+    assert all(part.isdigit() for ip in ips for part in ip.split("."))