Updating Spin Hub with Tera Sample

Signed-off-by: Kunjan Dalal <[email protected]>

content/api/hub/sample_tera.md

@@ -0,0 +1,25 @@
+title = "Tera Template Engine and Spin"
+template = "render_hub_content_body"
+date = "2024-09-17T00:00:00Z"
+content-type = "text/html"
+tags = ["rust", "templating" , "cookies"]
+
+[extra]
+author = "kunjee17"
+type = "hub_document"
+category = "Sample"
+language = "Rust"
+created_at = "2024-09-17T00:00:00Z"
+last_updated = "2024-09-17T00:00:00Z"
+spin_version = ">=v2.0"
+summary =  "Example of how to load templates off of the filesystem and then render them. Also, covers creating session cookies and protected routes using cookies."
+url = "https://github.com/kunjee17/spin_monolith"
+keywords = "rust, tera, cookies"
+
+---
+
+This is an example of using the [Tera template engine](https://keats.github.io/tera/) inside of a Fermyon Spin app. You will learn how to load templates off of the filesystem and then render them.
+
+Also, you will learn how to use session cookies to have protected route and how to use `form-post` to submit data to spin route.
+
+To get started, please visit the [GitHub repository](https://github.com/kunjee17/spin_monolith).