Add OpenAPI route and server

src/main/kotlin/fr/dcproject/routes/OpenAPI.kt

@@ -0,0 +1,18 @@
+package fr.dcproject.routes
+
+import fr.dcproject.utils.readResource
+import io.ktor.application.call
+import io.ktor.http.ContentType
+import io.ktor.locations.KtorExperimentalLocationsAPI
+import io.ktor.response.respondText
+import io.ktor.routing.Route
+import io.ktor.routing.get
+import io.ktor.util.KtorExperimentalAPI
+
+@KtorExperimentalLocationsAPI
+@KtorExperimentalAPI
+fun Route.definition() {
+    get("/") {
+        call.respondText("/openApi.yaml".readResource(), ContentType("text", "yaml"))
+    }
+}