feat: implement MoloApp plans 01-15 with integration

Full C++23 framework tree: runtime, observability, security,
data, app, realtime, supervisor, clients, CLI, example plus
enterprise tenancy, audit, operability, governance,
supplychain. Postgres via docker compose for tests.

tests/example/openapi/docs_test.cpp

@@ -0,0 +1,16 @@
+// Routes: GET /openapi.json and GET /docs
+#include "support/Assert.hpp"
+
+using namespace molo::example::test;
+
+int main() {
+  Fixture f;
+  auto spec = f.client->get("/openapi.json");
+  check(spec.status == 200, "spec status 200");
+  check(contains(spec.body, "\"openapi\":\"3.0.0\""), "openapi version");
+  check(contains(spec.body, "/health"), "health path listed");
+  auto docs = f.client->get("/docs");
+  check(docs.status == 200, "docs status 200");
+  check(contains(docs.body, "/openapi.json"), "docs link spec");
+  return finish("openapi/docs");
+}