Add OpenAPI route and server

src/main/kotlin/fr/dcproject/utils/Resources.kt

@@ -0,0 +1,7 @@
+package fr.dcproject.utils
+
+fun String.readResource(callbak: (String) -> Unit = {}): String {
+    val content = callbak::class.java.getResource(this).readText()
+    callbak(content)
+    return content
+}