docs(api): add Bruno collection for Jetstream API

Excludes docs/ from deno fmt and deno lint so the Bruno
files don't break formatting and lint checks in CI.

docs/Remanso Jetstream API/meta/Hello world.bru

@@ -0,0 +1,40 @@
+meta {
+  name: Hello world
+  type: http
+  seq: 1
+}
+
+get {
+  url: {{baseUrl}}/
+  body: none
+  auth: inherit
+}
+
+example {
+  name: 200 Response
+  description: Plain text greeting
+  
+  request: {
+    url: {{baseUrl}}/
+    method: GET
+    mode: none
+  }
+  
+  response: {
+    headers: {
+      Content-Type: text/plain
+    }
+  
+    status: {
+      code: 200
+      text: OK
+    }
+  
+    body: {
+      type: text
+      content: '''
+        Hello world
+      '''
+    }
+  }
+}