Add ecosystem guides (#3847)

* Add ecosystem guides

* Update titles

* Rename stric

* Add unlink and fetch guides

* Add formdata guide

* Tweak title

* Moar

docs/guides/http/fetch.md

@@ -0,0 +1,24 @@
+---
+name: Send an HTTP request using fetch
+---
+
+Bun implements the Web-standard [`fetch`](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API) API for sending HTTP requests. To send a simple `GET` request to a URL:
+
+```ts
+const response = await fetch("https://bun.sh");
+const html = await response.text(); // HTML string
+```
+
+---
+
+To send a `POST` request to an API endpoint.
+
+```ts
+const response = await fetch("https://bun.sh/api", {
+  method: "POST",
+  body: JSON.stringify({ message: "Hello from Bun!" }),
+  headers: { "Content-Type": "application/json" },
+});
+
+const body = await response.json();
+```