add SkyvernClient (#1943)

skyvern/__init__.py

@@ -1,6 +1,7 @@
 from ddtrace import tracer
 from ddtrace.filters import FilterRequestsOnUrl
 
+from skyvern.agent import SkyvernAgent, SkyvernClient
 from skyvern.forge.sdk.forge_log import setup_logger
 
 tracer.configure(
@@ -11,3 +12,5 @@ tracer.configure(
     },
 )
 setup_logger()
+
+__all__ = ["SkyvernAgent", "SkyvernClient"]