docs(api): auth endpoints in bruno

LogisticsSupportTool_API_DOCS/app/auth/Signout.bru

@@ -0,0 +1,28 @@
+meta {
+  name: Signout
+  type: http
+  seq: 6
+}
+
+post {
+  url: http://{{url}}/lst/api/auth/sign-out
+  body: none
+  auth: inherit
+}
+
+body:json {
+  {
+    "username": "matthes01",
+    "password": "nova0511"
+  }
+}
+
+script:post-response {
+  
+  // Save it as an environment variable
+  bru.setEnvVar("session_cookie", null);
+}
+
+settings {
+  encodeUrl: true
+}