[CORL-388] Health Check (#2336)

* feat: added prelim health-check endpoint

* Update health.ts

* Update health.ts

* fix: lint

src/core/server/app/handlers/api/health.ts

@@ -0,0 +1,5 @@
+import { RequestHandler } from "express";
+
+export const healthHandler: RequestHandler = (req, res, next) => {
+  res.status(200).send("OK");
+};

src/core/server/app/handlers/api/index.ts

@@ -1,5 +1,6 @@
 export * from "./account";
 export * from "./auth";
 export * from "./graphql";
+export * from "./health";
 export * from "./install";
 export * from "./version";

src/core/server/app/router/api/index.ts

@@ -4,6 +4,7 @@ import passport from "passport";
 import { AppOptions } from "coral-server/app";
 import {
   graphQLHandler,
+  healthHandler,
   installHandler,
   versionHandler,
 } from "coral-server/app/handlers";
@@ -32,6 +33,9 @@ export function createAPIRouter(app: AppOptions, options: RouterOptions) {
   // Configure the version route.
   router.get("/version", versionHandler);
 
+  // Configure the Health route.
+  router.get("/health", healthHandler);
+
   // Installation middleware.
   router.use(
     "/install",