feat: Add API key support

src/components/Passthrough.astro

@@ -0,0 +1,16 @@
+---
+const json = JSON.stringify(Astro.props)
+
+/**
+ * note: you MUST only pass simple items that can go in JSON format natively
+ */
+export function load<T extends {} = {}>(): T {
+	const tag = document.querySelector<HTMLScriptElement>('#ASTRO_DATA')
+	if (!tag) {
+		throw new Error('could not load client variables, tag not found')
+	}
+	return JSON.parse(tag.innerText)
+}
+
+---
+<script id="ASTRO_DATA" is:inline type="application/json" set:html={json}></script>