feat(openapi): redesign auth pipeline with per-token-type routing (#36693)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/controllers/openapi/auth/flow.py

@@ -0,0 +1,19 @@
+from __future__ import annotations
+
+from collections.abc import Callable
+from typing import Any
+
+from controllers.openapi.auth.conditions import Cond
+from controllers.openapi.auth.data import AuthData, RequestContext
+
+
+class When:
+    def __init__(self, condition: Cond, *, then: Callable[[Any], None]) -> None:
+        self.condition = condition
+        self._step = then
+
+    def applies(self, ctx: RequestContext, data: AuthData | None = None) -> bool:
+        return self.condition(ctx, data)
+
+    def __call__(self, arg: Any) -> None:
+        self._step(arg)